web/index.html

   1 <!DOCTYPE html>
   2 <html lang="en">
   3 <head>
   4         <title>netdata dashboard</title>
   5
   6         <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
   7         <meta charset="utf-8">
   8         <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
   9         <meta name="viewport" content="width=device-width, initial-scale=1">
  10         <meta name="apple-mobile-web-app-capable" content="yes">
  11         <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
  12         <meta name="author" content="costa@tsaousis.gr">
  13
  14         <link rel="shortcut icon" href="images/seo-performance-multi-size.ico">
  15
  16         <link rel="apple-touch-icon" href="images/seo-performance-72.png">
  17         <link rel="apple-touch-icon" sizes="72x72" href="images/seo-performance-72.png">
  18         <link rel="apple-touch-icon" sizes="114x114" href="images/seo-performance-114.png">
  19
  20         <link rel="icon" type="image/png" sizes="512x512" href="images/seo-performance-512.png">
  21         <link rel="icon" type="image/png" sizes="256x256" href="images/seo-performance-256.png">
  22         <link rel="icon" type="image/png" sizes="128x128" href="images/seo-performance-128.png">
  23         <link rel="icon" type="image/png" sizes="64x64" href="images/seo-performance-64.png">
  24         <link rel="icon" type="image/png" sizes="48x48" href="images/seo-performance-48.png">
  25         <link rel="icon" type="image/png" sizes="32x32" href="images/seo-performance-32.png">
  26         <link rel="icon" type="image/png" sizes="24x24" href="images/seo-performance-24.png">
  27         <link rel="icon" type="image/png" sizes="16x16" href="images/seo-performance-16.png">
  28
  29         <style>
  30
  31         /* prevent body from hidding under the navbar */
  32         body {
  33                 padding-top: 50px;
  34         }
  35
  36         .modal-wide .modal-dialog {
  37                 width: 80%;
  38         }
  39
  40         /* fix # anchors scrolling under the navbar
  41            https://github.com/twbs/bootstrap/issues/1768#issuecomment-46519033
  42          */
  43         h1 {
  44                 position: relative;
  45                 z-index: -1;
  46         }
  47         h2 {
  48                 position: relative;
  49                 z-index: -2;
  50         }
  51         h1:before, h2:before {
  52                 display: block;
  53                 content: " ";
  54                 margin-top: -70px;
  55                 height: 70px;
  56                 visibility: hidden;
  57         }
  58
  59         .p {
  60                 display: block;
  61                 margin-top: 15px;
  62         }
  63
  64         .option-row,
  65         .option-control {
  66                 vertical-align: top;
  67                 padding: 10px;
  68                 padding-top: 30px;
  69                 padding-left: 30px;
  70         }
  71
  72         .option-info {
  73                 padding: 10px;
  74         }
  75
  76         .chart-message {
  77                 display: block;
  78                 margin-top: 10px;
  79         }
  80
  81         .container {
  82                 width: 90% !important;
  83         }
  84
  85         #masthead h1 {
  86                 /*font-size: 30px;*/
  87                 line-height: 1;
  88                 padding-top: 30px;
  89         }
  90
  91         #masthead .well {
  92                 margin-top:4%;
  93         }
  94
  95         /* fix the navbar shifting when a modal is open */
  96         /* https://github.com/twbs/bootstrap/issues/14040#issuecomment-159891033 */
  97         body.modal-open{
  98                 width: 100% !important;
  99                 padding-right: 0 !important;
 100 /*              overflow-y: scroll !important; */
 101 /*              position: fixed !important;*/
 102                 overflow: visible;
 103         }
 104
 105         /*
 106          * Side navigation
 107          *
 108          * Scrollspy and affixed enhanced navigation to highlight sections and secondary
 109          * sections of docs content.
 110          */
 111
 112         .affix {
 113                 position: static;
 114                 top: 70px !important;
 115                 /*width: 220px;*/
 116         }
 117
 118         .affix-top {
 119                 /*width: 220px;*/
 120         }
 121
 122         .dashboard-sidebar {
 123                 max-height: calc(100% - 70px) !important;
 124                 overflow-y: auto;
 125                 /*width: 220px !important;*/
 126         }
 127
 128         /* By default it's not affixed in mobile views, so undo that */
 129         .dashboard-sidebar.affix {
 130                 position: static;
 131         }
 132
 133         @media (min-width: 768px) {
 134                 .dashboard-sidebar {
 135                         padding-left: 20px;
 136                 }
 137         }
 138
 139         /* First level of nav */
 140         .dashboard-sidenav {
 141                 margin-top: 20px;
 142                 margin-bottom: 20px;
 143         }
 144
 145         /* All levels of nav */
 146         .dashboard-sidebar .nav > li > a {
 147                 display: block;
 148                 padding: 4px 20px;
 149                 font-size: 13px;
 150                 font-weight: 500;
 151                 color: #767676;
 152         }
 153         .dashboard-sidebar .nav > li > a:hover,
 154         .dashboard-sidebar .nav > li > a:focus {
 155                 padding-left: 19px;
 156                 color: #563d7c;
 157                 text-decoration: none;
 158                 background-color: transparent;
 159                 border-left: 1px solid #563d7c;
 160         }
 161         .dashboard-sidebar .nav > .active > a,
 162         .dashboard-sidebar .nav > .active:hover > a,
 163         .dashboard-sidebar .nav > .active:focus > a {
 164                 padding-left: 18px;
 165                 font-weight: bold;
 166                 color: #563d7c;
 167                 background-color: transparent;
 168                 border-left: 2px solid #563d7c;
 169         }
 170
 171         /* Nav: second level (shown on .active) */
 172         .dashboard-sidebar .nav .nav {
 173                 display: none; /* Hide by default, but at >768px, show it */
 174                 padding-bottom: 10px;
 175         }
 176         .dashboard-sidebar .nav .nav > li > a {
 177                 padding-top: 1px;
 178                 padding-bottom: 1px;
 179                 padding-left: 30px;
 180                 font-size: 12px;
 181                 font-weight: normal;
 182         }
 183         .dashboard-sidebar .nav .nav > li > a:hover,
 184         .dashboard-sidebar .nav .nav > li > a:focus {
 185                 padding-left: 29px;
 186         }
 187         .dashboard-sidebar .nav .nav > .active > a,
 188         .dashboard-sidebar .nav .nav > .active:hover > a,
 189         .dashboard-sidebar .nav .nav > .active:focus > a {
 190                 padding-left: 28px;
 191                 font-weight: 500;
 192         }
 193
 194         /* Back to top (hidden on mobile) */
 195         .back-to-top,
 196         .dashboard-theme-toggle {
 197                 display: none;
 198                 padding: 4px 10px;
 199                 margin-top: 10px;
 200                 margin-left: 10px;
 201                 font-size: 12px;
 202                 font-weight: 500;
 203                 color: #999;
 204         }
 205         .back-to-top:hover,
 206         .dashboard-theme-toggle:hover {
 207                 color: #563d7c;
 208                 text-decoration: none;
 209         }
 210         .dashboard-theme-toggle {
 211                 margin-top: 0;
 212         }
 213
 214         @media (min-width: 768px) {
 215                 .back-to-top,
 216                 .dashboard-theme-toggle {
 217                         display: block;
 218                 }
 219
 220                 /* Widen the fixed sidebar */
 221                 .dashboard-sidebar.affix,
 222                 .dashboard-sidebar.affix-top,
 223                 .dashboard-sidebar.affix-bottom {
 224                         width: 200px !important;
 225                 }
 226
 227                 .dashboard-sidebar.affix {
 228                         position: fixed; /* Undo the static from mobile first approach */
 229                         top: 20px;
 230                 }
 231
 232                 .dashboard-sidebar.affix-bottom {
 233                         position: absolute; /* Undo the static from mobile first approach */
 234                 }
 235
 236                 .dashboard-sidebar.affix-bottom .dashboard-sidenav,
 237                 .dashboard-sidebar.affix .dashboard-sidenav {
 238                         margin-top: 0;
 239                         margin-bottom: 0;
 240                 }
 241         }
 242
 243         /* Show and affix the side nav when space allows it */
 244         @media (min-width: 992px) {
 245                 .dashboard-sidebar .nav > .active > ul {
 246                         display: block;
 247                 }
 248
 249                 /* Widen the fixed sidebar */
 250                 .dashboard-sidebar.affix,
 251                 .dashboard-sidebar.affix-top,
 252                 .dashboard-sidebar.affix-bottom {
 253                         width: 200px !important;
 254                 }
 255                 .dashboard-sidebar.affix {
 256                         position: fixed; /* Undo the static from mobile first approach */
 257                         top: 20px;
 258                 }
 259                 .dashboard-sidebar.affix-bottom {
 260                         position: absolute; /* Undo the static from mobile first approach */
 261                 }
 262                 .dashboard-sidebar.affix-bottom .dashboard-sidenav,
 263                 .dashboard-sidebar.affix .dashboard-sidenav {
 264                         margin-top: 0;
 265                         margin-bottom: 0;
 266                 }
 267         }
 268
 269         @media (min-width: 1200px) {
 270                 /* Widen the fixed sidebar again */
 271                 .dashboard-sidebar.affix-bottom,
 272                 .dashboard-sidebar.affix-top,
 273                 .dashboard-sidebar.affix {
 274                         width: 263px;
 275                 }
 276         }
 277         </style>
 278
 279         <!-- you can set your netdata server globally, by ucommenting this -->
 280         <!-- you can also give a different server per chart, with the attribute: data-host="http://netdata.server:19999" -->
 281         <!-- <script> netdataServer = "http://box:19999"; </script> -->
 282
 283         <!-- check which theme to use -->
 284         <script>
 285                 function loadLocalStorage(name) {
 286                         var ret = null;
 287
 288                         try {
 289                                 if(typeof Storage !== "undefined" && typeof localStorage === 'object')
 290                                         ret = localStorage.getItem(name);
 291                         }
 292                         catch(error) {
 293                                 ;
 294                         }
 295
 296                         if(typeof ret === 'undefined' || ret === null)
 297                                 return null;
 298
 299                         return ret;
 300                 }
 301
 302                 function saveLocalStorage(name, value) {
 303                         try {
 304                                 if(typeof Storage !== "undefined" && typeof localStorage === 'object') {
 305                                         localStorage.setItem(name, value.toString());
 306                                         return true;
 307                                 }
 308                         }
 309                         catch(error) {
 310                                 ;
 311                         }
 312
 313                         return false;
 314                 }
 315
 316                 function getTheme(def) {
 317                         var ret = loadLocalStorage('netdataTheme');
 318                         if(typeof ret === 'undefined' || ret === null || ret === 'undefined')
 319                                 return def;
 320                         else
 321                                 return ret;
 322                 }
 323                 var netdataTheme = getTheme('slate');
 324
 325                 function setTheme(theme) {
 326                         if(theme === netdataTheme) return false;
 327
 328                         return saveLocalStorage('netdataTheme', theme);
 329                 }
 330         </script>
 331
 332         <!-- load the dashboard manager - it will do the rest -->
 333         <script type="text/javascript" src="dashboard.js?v27"></script>
 334 </head>
 335
 336 <body data-spy="scroll" data-target="#sidebar">
 337         <nav class="navbar navbar-default navbar-fixed-top" role="banner">
 338                 <div class="container">
 339                         <div class="navbar-header">
 340                                 <button class="navbar-toggle" type="button" data-toggle="collapse" data-target=".navbar-collapse">
 341                                         <span class="sr-only">Toggle navigation</span>
 342                                         <span class="icon-bar"></span>
 343                                         <span class="icon-bar"></span>
 344                                         <span class="icon-bar"></span>
 345                                 </button>
 346                                 <a href="/" class="navbar-brand" id="hostname">netdata</a>
 347                         </div>
 348                         <nav class="collapse navbar-collapse navbar-right" role="navigation">
 349                                 <ul class="nav navbar-nav">
 350                                         <li><a href="#" class="btn" data-toggle="modal" data-target="#optionsModal"><i class="fa fa-cog"></i> settings</a></li>
 351                                         <li><a href="https://github.com/firehol/netdata/wiki" class="btn" target="_blank"><i class="fa fa-github"></i> community</a></li>
 352                                         <li id="updateButton"><a href="#" class="btn" data-toggle="modal" data-target="#updateModal"><i class="fa fa-cloud-download"></i> update</a></li>
 353 <!--                                    <li><a href="old/" class="btn" target="_blank"><i class="fa fa-step-backward"></i> old dashboard</a></li> -->
 354                                         <li><a href="#" class="btn" data-toggle="modal" data-target="#helpModal"><i class="fa fa-question-circle"></i> help</a></li>
 355 <!--                                    <li><a href="#sec">Visualize</a></li>
 356                                         <li><a href="#sec">Prototype</a></li>
 357 -->                             </ul>
 358                         </nav>
 359                 </div>
 360         </nav>
 361
 362         <div id="masthead" style="display: none;">
 363                 <div class="container">
 364                         <div class="row">
 365                                 <div class="col-md-7">
 366                                         <h1>Netdata
 367                                                 <p class="lead">Real-time performance monitoring, in the greatest possible detail</p>
 368                                         </h1>
 369                                 </div>
 370                                 <div class="col-md-5">
 371                                         <div class="well well-lg">
 372                                                 <div class="row">
 373                                                 <div class="col-md-6">
 374                                                         <b>Drag</b> charts to pan.
 375                                                         <b>Shift + wheel</b> on them, to zoom in and out.
 376                                                         <b>Double-click</b> on them, to reset.
 377                                                         <b>Hover</b> on them too!
 378                                                         </div>
 379                                                 <div class="col-md-6">
 380                                                         <div data-netdata="system.intr" data-chart-library="dygraph" data-dygraph-theme="sparkline" data-dygraph-type="line" data-dygraph-strokewidth="3" data-dygraph-smooth="true" data-dygraph-highlightcirclesize="6" data-after="-90" data-height="60px" data-colors="#C66"></div>
 381                                                         </div>
 382                                                 </div>
 383                                         </div>
 384                                 </div>
 385                         </div>
 386                 </div>
 387         </div>
 388
 389         <div class="container">
 390                 <div class="row">
 391                         <div class="col-md-10" role="main">
 392                                 <div id="charts_div"></div>
 393                         </div>
 394                         <div class="col-md-2" role="complementary">
 395                                 <nav class="dashboard-sidebar hidden-print hidden-xs hidden-sm" id="sidebar" role="menu"></nav>
 396                         </div>
 397                 </div>
 398         </div>
 399
 400         <div id="footer" class="container" style="display: none;">
 401                 <div class="row">
 402                         <div class="col-md-10" role="main">
 403                                 <div class="p">
 404                                         <big><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></big><br/>
 405                                         <i class="fa fa-copyright"></i> Copyright 2016, Costa Tsaousis.<br/>
 406                                         Released under <a href="http://www.gnu.org/licenses/gpl-3.0.en.html" target="_blank">GPL v3 or later</a>.<br/>
 407                                 </div>
 408                                 <div class="p">
 409                                         <small>
 410                                                 <a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a> re-distributes these software tools:
 411
 412                                                 <i class="fa fa-circle"></i> The excellent <a href="http://dygraphs.com/" target="_blank">Dygraphs.com</a> web chart library,
 413                                                 <i class="fa fa-copyright"></i> Copyright 2009, Dan Vanderkam, <a href="http://dygraphs.com/legal.html" target="_blank">MIT License</a>
 414
 415                                                 <i class="fa fa-circle"></i> <a href="http://omnipotent.net/jquery.sparkline/" target="_blank">jQuery Sparklines</a> web chart library,
 416                                                 <i class="fa fa-copyright"></i> Copyright 2009-2012, Splunk Inc., <a href="http://opensource.org/licenses/BSD-3-Clause" target="_blank">New BSD License</a>
 417
 418                                                 <i class="fa fa-circle"></i> <a href="http://benpickles.github.io/peity/" target="_blank">Peity</a> web chart library,
 419                                                 <i class="fa fa-copyright"></i> Copyright 2009-2015, Ben Pickles, <a href="https://github.com/benpickles/peity/blob/master/MIT-LICENCE" target="_blank">MIT License</a>
 420
 421                                                 <i class="fa fa-circle"></i> <a href="https://rendro.github.io/easy-pie-chart/" target="_blank">Easy Pie Chart</a> web chart library,
 422                                                 <i class="fa fa-copyright"></i> Copyright 2013, Robert Fleischmann, <a href="https://github.com/rendro/easy-pie-chart/blob/master/LICENSE" target="_blank">MIT License</a>
 423
 424                                                 <i class="fa fa-circle"></i> <a href="http://bernii.github.io/gauge.js/" target="_blank">Gauge.js</a> web chart library,
 425                                                 <i class="fa fa-copyright"></i> Copyright, Bernard Kobos, <a href="http://bernii.github.io/gauge.js/" target="_blank">MIT License</a>
 426
 427                                                 <i class="fa fa-circle"></i> <a href="https://jquery.org/" target="_blank">jQuery</a>,
 428                                                 <i class="fa fa-copyright"></i> Copyright 2015, jQuery Foundation, <a href="https://jquery.org/license/" target="_blank">MIT License</a>
 429
 430                                                 <i class="fa fa-circle"></i> <a href="http://getbootstrap.com/getting-started/" target="_blank">Bootstrap</a>,
 431                                                 <i class="fa fa-copyright"></i> Copyright 2015, Twitter, <a href="http://getbootstrap.com/getting-started/#license-faqs" target="_blank">MIT License</a>
 432
 433                                                 <i class="fa fa-circle"></i> <a href="http://www.bootstraptoggle.com/" target="_blank">Bootstrap Toggle</a>,
 434                                                 <i class="fa fa-copyright"></i> Copyright (c) 2011-2014 Min Hur, The New York Times Company, <a href="https://github.com/minhur/bootstrap-toggle/blob/master/LICENSE" target="_blank">MIT License</a>
 435
 436                                                 <i class="fa fa-circle"></i> <a href="https://jamesflorentino.github.io/nanoScrollerJS/" target="_blank">NanoScroller</a>,
 437                                                 <i class="fa fa-copyright"></i> Copyright 2012, James Florentino, <a href="https://github.com/jamesflorentino/nanoScrollerJS/blob/master/LICENSE" target="_blank">MIT License</a>
 438
 439                                                 <i class="fa fa-circle"></i> <a href="https://github.com/marcj/css-element-queries" target="_blank">CSS Element Queries</a>,
 440                                                 <i class="fa fa-copyright"></i> Copyright Marc J. Schmidt, <a href="https://github.com/marcj/css-element-queries/blob/master/LICENSE" target="_blank">MIT License</a>
 441
 442                                                 <i class="fa fa-circle"></i> <a href="https://fortawesome.github.io/Font-Awesome/" target="_blank">FontAwesome</a>,
 443                                                 <i class="fa fa-copyright"></i> Created by Dave Gandy, Font: <a href="http://scripts.sil.org/OFL" target="_blank">SIL OFL 1.1 License</a>, CSS: <a href="http://opensource.org/licenses/mit-license.html" target="_blank">MIT License</a>
 444
 445                                                 <i class="fa fa-circle"></i> <a href="http://www.iconsdb.com/soylent-red-icons/seo-performance-icon.html" target="_blank">IconsDB.com Icons</a>, Icons provided as CC0 1.0 Universal (CC0 1.0) Public Domain Dedication.
 446
 447                                                 <i class="fa fa-circle"></i> <a href="http://morrisjs.github.io/morris.js/" target="_blank">morris.js</a>,
 448                                                 <i class="fa fa-copyright"></i> Copyright 2013, Olly Smith, <a href="http://morrisjs.github.io/morris.js/" target="_blank">Simplified BSD License</a>
 449
 450                                                 <i class="fa fa-circle"></i> <a href="http://raphaeljs.com/" target="_blank">Raphaël</a>,
 451                                                 <i class="fa fa-copyright"></i> Copyright 2008, Dmitry Baranovskiy, <a href="http://raphaeljs.com/license.html" target="_blank">MIT License</a>
 452
 453                                                 <i class="fa fa-circle"></i> <a href="http://C3js.org/" target="_blank">C3</a>,
 454                                                 <i class="fa fa-copyright"></i> Copyright 2013, Masayuki Tanaka, <a href="https://github.com/masayuki0812/c3/blob/master/LICENSE" target="_blank">MIT License</a>
 455
 456                                                 <i class="fa fa-circle"></i> <a href="http://D3js.org/" target="_blank">D3</a>,
 457                                                 <i class="fa fa-copyright"></i> Copyright 2015, Mike Bostock, <a href="http://opensource.org/licenses/BSD-3-Clause" target="_blank">BSD License</a>
 458
 459                                                 <i class="fa fa-circle"></i> <a href="https://github.com/broofa/node-int64" target="_blank">node-int64</a>,
 460                                                 <i class="fa fa-copyright"></i> Copyright 2014, Robert Kieffer, <a href="https://github.com/broofa/node-int64/blob/master/LICENSE" target="_blank">MIT License</a>
 461
 462                                         </small>
 463                                 </div>
 464                         </div>
 465                 </div>
 466         </div>
 467
 468         <div class="modal fade" id="welcomeModal" tabindex="-1" role="dialog" aria-labelledby="welcomeModalLabel">
 469                 <div class="modal-dialog modal-lg" role="document">
 470                         <div class="modal-content">
 471                                 <div class="modal-header">
 472                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 473                                         <h4 class="modal-title" id="welcomeModalLabel">Welcome!</h4>
 474                                 </div>
 475                                 <div class="modal-body">
 476                                                 <div class="p">
 477                                                 <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> is the fastest way to visualize metrics. It is a resource efficient, highly optimized system for collecting and visualizing any type of realtime timeseries data, from CPU usage, disk activity, SQL queries, API calls, web site visitors, etc.
 478                                                 </div>
 479                                                 <div class="p">
 480                                                 <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> tries to visualize the truth of <b>now</b>, in its <b>greatest detail</b>, so that you can get insights of what is happening now and what just happened, on your systems and applications.
 481                                                 </div>
 482                                                 <div class="p">
 483                                                 To make a chart in <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b>, you just need a <b>number</b>. Just a number you can read somehow. <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> will turn this number to a real time, interactive, web chart. For collecting these numbers, it supports <a href="https://github.com/firehol/netdata/wiki/External-Plugins" target="_blank">external plugins</a>, even <a href="https://github.com/firehol/netdata/wiki/General-Info---charts.d" target="_blank">shell</a> or <a href="https://github.com/firehol/netdata/wiki/General-Info---charts.d" target="_blank">node.js</a> plugins. Any computer program, in any language, that can print a few lines of text on its standard output, can be a netdata data collector.
 484                                                 </div>
 485                                                 <div class="p">
 486                                                 <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> can embed charts everywhere, like this one <div data-netdata="system.cpu" data-dimensions="system" data-after="-120" data-width="25%" data-height="15px" data-chart-library="dygraph" data-dygraph-theme="sparkline" data-show-value-of-system-at="system.cpu.system.modal.1"></div> (my CPU system usage which is <span id="system.cpu.system.modal.1" style="display: inline-block; width: 40px; text-align: right;"></span>%),
 487                                                 or this one <div data-netdata="ipv4.tcppackets" data-dimensions="received" data-after="-120" data-width="25%" data-height="15px" data-chart-library="dygraph" data-dygraph-theme="sparkline" data-show-value-of-received-at="ipv4.tcppackets.received.modal.1"></div> (my IPv4 received TCP packets, which are <span id="ipv4.tcppackets.received.modal.1" style="display: inline-block; width: 60px; text-align: right;"></span>/second).
 488                                                 </div>
 489                                                 <div class="p">
 490                                                 You can have <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> charts on your site too. Just give it a <code>div</code> and a real time chart, zoomable and draggable will appear (try it even on these tiny ones - <b>drag</b> them to pan horizontally, <b>shift + drag</b> to zoom in, on <b>chrome shift + mouse wheel</b> to zoom in/out, <b>double click</b> on them to reset them - don't be afraid of <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> performance - <a href="https://github.com/firehol/netdata/wiki/Performance" target="_blank">a raspberry pi 2 can sustain 300 charts updates per second</a>!).
 491                                                 </div>
 492                                                 <div class="p">
 493                                                 For more information please refer to the <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata wiki</a></b>.
 494                                                 </div>
 495                                 </div>
 496                                 <div class="modal-footer">
 497                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 498                                 </div>
 499                         </div>
 500                 </div>
 501         </div>
 502
 503         <div class="modal fade" id="helpModal" tabindex="-1" role="dialog" aria-labelledby="helpModalLabel">
 504                 <div class="modal-dialog modal-lg" role="document">
 505                         <div class="modal-content">
 506                                 <div class="modal-header">
 507                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 508                                         <h4 class="modal-title" id="helpModalLabel">Dashboard Help</h4>
 509                                 </div>
 510                                 <div class="modal-body">
 511
 512                                         <h4>Dygraphs (line, area and stacked area charts)</h4>
 513
 514                                         <!-- Nav tabs -->
 515                                         <ul class="nav nav-tabs" role="tablist">
 516                                                 <li role="presentation" class="active"><a href="#help_mouse" aria-controls="help_mouse" role="tab" data-toggle="tab">Mouse Interface</a></li>
 517                                                 <li role="presentation"><a href="#help_touch" aria-controls="help_touch" role="tab" data-toggle="tab">Touch Interface</a></li>
 518                                         </ul>
 519
 520                                         <!-- Tab panes -->
 521                                         <div class="tab-content">
 522                                                 <div role="tabpanel" class="tab-pane active" id="help_mouse">
 523                                                         <div class="p">
 524                                                                 <h4>Mouse Over / Hover</h4>
 525                                                                 Mouse over on a chart to show, at its legend, the values for the timestamp under the mouse (the chart will also highlight the point at the chart).
 526                                                                 <br/>
 527                                                                 All the other visible charts will also show and highlight their values for the same timestamp.
 528                                                         </div>
 529                                                         <hr/>
 530                                                         <div class="p">
 531                                                                 <h4>Drag Chart Contents</h4>
 532                                                                 Drag the contents of a chart to pan it horizontally.
 533                                                                 <br/>
 534                                                                 All the charts will follow soon after you let the chart alone (this little delay is by design: it speeds up your browser and lets you focus on what you are exploring).
 535                                                                 <br/>
 536                                                                 Once a chart is panned, auto refreshing stops for all charts. To enable it again, <b>double click</b> a panned chart.
 537                                                         </div>
 538                                                         <hr/>
 539                                                         <div class="p">
 540                                                                 <h4>Double Click</h4>
 541                                                                 Double Click a chart to reset all the charts to their default auto-refreshing state.
 542                                                         </div>
 543                                                         <hr/>
 544                                                         <div class="p">
 545                                                                 <h4>SHIFT + Drag</h4>
 546                                                                 While pressing the shift key, click on the contents of a chart and move the mouse to select an area, to zoom in. The other charts will follow too. Zooming is performed in two phases:
 547                                                                 <ul>
 548                                                                         <li>The already loaded chart contents are zoomed (low resolution)</li>
 549                                                                         <li>New data are transfered from the netdata server, to refresh the chart with possibly more detail.</li>
 550                                                                 </ul>
 551                                                                 Once a chart is zoomed, auto refreshing stops for all charts. To enable it again, <b>double click</b> a zoomed chart.
 552                                                         </div>
 553                                                         <hr/>
 554                                                         <div class="p">
 555                                                                 <h4>SHIFT + Mouse Wheel <small>(does not work on firefox and IE/Edge)</small></h4>
 556                                                                 While pressing the shift key and the mouse pointer is over the contents of a chart, scroll the mouse wheel to zoom in or out. This kind of zooming is aligned to center below the mouse pointer. The other charts will follow too.
 557                                                                 <br/>
 558                                                                 Once a chart is zoomed, auto refreshing stops for all charts. To enable it again, <b>double click</b> a zoomed chart.
 559                                                         </div>
 560                                                         <hr/>
 561                                                         <div class="p">
 562                                                                 <h4>Legend Operations</h4>
 563                                                                 Click on the label or value of a dimension, will select / unselect this dimension.
 564                                                                 <br/>
 565                                                                 You can press any of the SHIFT or CONTROL keys and then click on legend labels or values, to select / unselect multiple dimensions.
 566                                                         </div>
 567                                                 </div>
 568                                                 <div role="tabpanel" class="tab-pane" id="help_touch">
 569                                                         <div class="p">
 570                                                                 <h4>Single Tap</h4>
 571                                                                 Single Tap on the contents of a chart to show, at its legend, the values for the timestamp tapped (the chart will also highlight the point at the chart).
 572                                                                 <br/>
 573                                                                 All the other visible charts will also show and highlight their values for the same timestamp.
 574                                                         </div>
 575                                                         <hr/>
 576                                                         <div class="p">
 577                                                                 <h4>Drag Chart Contents</h4>
 578                                                                 Touch and Drag the contents of a chart to pan it horizontally.
 579                                                                 <br/>
 580                                                                 All the charts will follow soon after you let the chart alone (this little delay is by design: it speeds up your browser and lets you focus on what you are exploring).
 581                                                                 <br/>
 582                                                                 Once a chart is panned, auto refreshing stops for all charts. To enable it again, <b>double tap</b> a panned chart.
 583                                                         </div>
 584                                                         <hr/>
 585                                                         <div class="p">
 586                                                                 <h4>Double Tap</h4>
 587                                                                 Double tap a chart to reset all the charts to their default auto-refreshing state.
 588                                                         </div>
 589                                                         <hr/>
 590                                                         <div class="p">
 591                                                                 <h4>Zoom <small>(does not work on firefox and IE/Edge)</small></h4>
 592                                                                 With two fingers, zoom in or out.
 593                                                                 <br/>
 594                                                                 Once a chart is zoomed, auto refreshing stops for all charts. To enable it again, <b>double click</b> a zoomed chart.
 595                                                         </div>
 596                                                         <hr/>
 597                                                         <div class="p">
 598                                                                 <h4>Legend Operations</h4>
 599                                                                 Tap on the label or value of a dimension, will select / unselect this dimension.
 600                                                         </div>
 601                                                 </div>
 602                                         </div>
 603                                 </div>
 604                                 <div class="modal-footer">
 605                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 606                                 </div>
 607                         </div>
 608                 </div>
 609         </div>
 610
 611         <div class="modal fade" id="optionsModal" tabindex="-1" role="dialog" aria-labelledby="optionsModalLabel">
 612                 <div class="modal-dialog modal-lg" role="document">
 613                         <div class="modal-content">
 614                                 <div class="modal-header">
 615                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 616                                         <h4 class="modal-title" id="optionsModalLabel">netdata dashboard options</h4>
 617                                 </div>
 618                                 <div class="modal-body">
 619                                         <center>
 620                                                 <small style="color: #BBBBBB;">These are browser settings. Each viewer has its own. They do not affect the operation of your netdata server.
 621                                                 <br/>
 622                                                 Settings take effect immediately and are saved permanently to browser local storage (except the refresh on focus / always option).
 623                                                 <br/>
 624                                                 To reset all options (including charts sizes) to their defaults, click <a href="#" onclick="resetDashboardOptions(); return false;">here</a>.</small>
 625                                         </center>
 626                                         <div style="padding: 10px;"></div>
 627
 628                                         <!-- Nav tabs -->
 629                                         <ul class="nav nav-tabs" role="tablist">
 630                                                 <li role="presentation" class="active"><a href="#settings_performance" aria-controls="settings_performance" role="tab" data-toggle="tab">Performance</a></li>
 631                                                 <li role="presentation"><a href="#settings_sync" aria-controls="settings_sync" role="tab" data-toggle="tab">Synchronization</a></li>
 632                                                 <li role="presentation"><a href="#settings_visual" aria-controls="settings_visual" role="tab" data-toggle="tab">Visual</a></li>
 633                                         </ul>
 634
 635                                         <!-- Tab panes -->
 636                                         <div class="tab-content">
 637                                                 <div role="tabpanel" class="tab-pane active" id="settings_performance">
 638                                                         <form id="optionsForm1" method="get" class="form-horizontal">
 639                                                                 <div class="form-group">
 640                                                                         <table>
 641                                                                         <tr class="option-row">
 642                                                                                 <td class="option-control"><input id="stop_updates_when_focus_is_lost" type="checkbox" checked data-toggle="toggle" data-offstyle="danger" data-onstyle="success" data-on="On Focus" data-off="Always" data-width="110px"></td>
 643                                                                                 <td class="option-info"><strong>When to refresh the charts?</strong><br/>
 644                                                                                         <small>When set to <b>On Focus</b>, the charts will stop being updated if the page / tab does not have the focus of the user. When set to <b>Always</b>, the charts will always be refreshed. Set it to <b>On Focus</b> it to lower the CPU requirements of the browser (and extend the battery of laptops and tablets) when this page does not have your focus. Set to <b>Always</b> to work on another window (i.e. change the settings of something) and have the charts auto-refresh in this window.</small>
 645                                                                                 </td>
 646                                                                                 </tr>
 647                                                                         <tr class="option-row">
 648                                                                                 <td class="option-control">
 649                                                                                 <input id="eliminate_zero_dimensions" type="checkbox" checked data-toggle="toggle" data-on="Non Zero" data-off="All" data-width="110px">
 650                                                                                 </td>
 651                                                                                 <td class="option-info"><strong>Which dimensions to show?</strong><br/>
 652                                                                                         <small>When set to <b>Non Zero</b>, dimensions that have all their values (within the current view) set to zero will not be transfered from the netdata server (except if all dimensions of the chart are zero, in which case this setting does nothing - all dimensions are transfered and shown). When set to <b>All</b>, all dimensions will always be shown. Set it to <b>Non Zero</b> to lower the data transfered between netdata and your browser, lower the CPU requirements of your browser (fewer lines to draw) and increase the focus on the legends (fewer entries at the legends).</small>
 653                                                                                 </td>
 654                                                                                 </tr>
 655                                                                         <tr class="option-row">
 656                                                                                 <td class="option-control"><input id="destroy_on_hide" type="checkbox" data-toggle="toggle" data-on="Destroy" data-off="Hide" data-width="110px"></td>
 657                                                                                 <td class="option-info"><strong>How to handle hidden charts?</strong><br/>
 658                                                                                         <small>When set to <b>Destroy</b>, charts that are not in the current viewport of the browser (are above, or below the visible area of the page), will be destroyed and re-created if and when they become visible again. When set to <b>Hide</b>, the not-visible charts will be just hidden, to simplify the DOM and speed up your browser. Set it to <b>Destroy</b>, to lower the memory requirements of your browser. Set it to <b>Hide</b> for smoother page scrolling.</small>
 659                                                                                 </td>
 660                                                                                 </tr>
 661                                                                         </table>
 662                                                                 </div>
 663                                                         </form>
 664                                                 </div>
 665                                                 <div role="tabpanel" class="tab-pane" id="settings_sync">
 666                                                         <form id="optionsForm2" method="get" class="form-horizontal">
 667                                                                 <div class="form-group">
 668                                                                         <table>
 669                                                                         <tr class="option-row">
 670                                                                                 <td class="option-control"><input id="parallel_refresher" type="checkbox" checked data-toggle="toggle" data-on="Parallel" data-off="Sequencial" data-width="110px"></td>
 671                                                                                 <td class="option-info"><strong>Which chart refresh policy to use?</strong><br/>
 672                                                                                         <small>When set to <b>parallel</b>, visible charts are refreshed in parallel (all queries are sent to netdata server in parallel) and are rendered asynchronously. When set to <b>sequencial</b> charts are refreshed one after another. Set it to parallel if your browser can cope with it (most modern browsers do), set it to sequencial if you work on an older/slower computer.</small>
 673                                                                                 </td>
 674                                                                                 </tr>
 675                                                                         <tr class="option-row" id="concurrent_refreshes_row">
 676                                                                                 <td class="option-control"></td>
 677                                                                                 <td class="option-info">
 678                                                                                         <table>
 679                                                                                         <tr class="option-row">
 680                                                                                         <td class="option-control">
 681                                                                                         <input id="concurrent_refreshes" type="checkbox" checked data-toggle="toggle" data-on="Resync" data-off="Best Effort" data-width="110px">
 682                                                                                         </td>
 683                                                                                         <td class="option-info">
 684                                                                                         <strong>Shall we re-sync chart refreshes?</strong><br/>
 685                                                                                         <small>When set to <b>Resync</b>, the dashboard will attempt to re-synchronize all the charts so that they are refreshed concurrently. When set to <b>Best Effort</b>, each chart may be refreshed with a little time difference to the others. Normally, the dashboard starts refreshing them in parallel, but depending on the speed of your computer and the network latencies, charts start having a slight time difference. Setting this to <b>Resync</b> will attempt to re-synchronize the charts on every update. Setting it to <b>Best Effort</b> may lower the pressure on your browser and the network.</small>
 686                                                                                         </td>
 687                                                                                         </tr>
 688                                                                                         </table>
 689                                                                                 </td>
 690                                                                                 </tr>
 691                                                                         <tr class="option-row">
 692                                                                                 <td class="option-control"><input id="sync_selection" type="checkbox" checked data-toggle="toggle" data-on="Sync" data-off="Don't Sync" data-onstyle="success" data-offstyle="danger" data-width="110px"></td>
 693                                                                                 <td class="option-info"><strong>Sync hover selection on all charts?</strong><br/>
 694                                                                                         <small>When enabled, a selection on one chart will automatically select the same time on all other visible charts and the legends of all visible charts will be updated to show the selected values. When disabled, only the chart getting the user's attention will be selected. Enable it to get better insights of the data. Disable it if you are on a very slow computer that cannot actually do it.</small>
 695                                                                                 </td>
 696                                                                                 </tr>
 697                                                                         <tr class="option-row">
 698                                                                                 <td class="option-control"><input id="sync_pan_and_zoom" type="checkbox" checked data-toggle="toggle"  data-on="Sync" data-off="Don't Sync" data-onstyle="success" data-offstyle="danger" data-width="110px"></td>
 699                                                                                 <td class="option-info"><strong>Sync pan and zoom on all charts?</strong><br/>
 700                                                                                         <small>When enabled, pan and zoom operations on a chart will be replicated to all charts (even the ones that are not currently visible - of course only when they will become visible). When disabled, pan and zoom operations will not be propagated to other charts.</small>
 701                                                                                 </td>
 702                                                                                 </tr>
 703                                                                         </table>
 704                                                                 </div>
 705                                                         </form>
 706                                                 </div>
 707                                                 <div role="tabpanel" class="tab-pane" id="settings_visual">
 708                                                         <form id="optionsForm3" method="get" class="form-horizontal">
 709                                                                 <div class="form-group">
 710                                                                         <table>
 711                                                                         <tr class="option-row">
 712                                                                                 <td class="option-control"><input id="netdata_theme_control" type="checkbox" checked data-toggle="toggle" data-offstyle="danger" data-onstyle="success" data-on="Dark" data-off="White" data-width="110px"></td>
 713                                                                                 <td class="option-info"><strong>Which theme to use?</strong><br/>
 714                                                                                         <small>Netdata comes with two themes: <b>Dark</b> (the default) and <b>White</b>.
 715                                                                                         <br/>
 716                                                                                         <b>Switching this will reload the dashboard</b>.
 717                                                                                         </small>
 718                                                                                 </td>
 719                                                                                 </tr>
 720                                                                         <tr class="option-row">
 721                                                                                 <td class="option-control"><input id="show_help" type="checkbox" checked data-toggle="toggle" data-on="Help Me" data-off="No Help" data-width="110px"></td>
 722                                                                                 <td class="option-info"><strong>Do you need help?</strong><br/>
 723                                                                                         <small>Netdata can show some help in some areas to help you use the dashboard. If all these balloons bother you, disable them using this switch.
 724                                                                                         <br/>
 725                                                                                         <b>Switching this will reload the dashboard</b>.
 726                                                                                         </small>
 727                                                                                 </td>
 728                                                                                 </tr>
 729                                                                         <tr class="option-row">
 730                                                                                 <td class="option-control"><input id="pan_and_zoom_data_padding" type="checkbox" checked data-toggle="toggle"  data-on="Pad" data-off="Don't Pad" data-width="110px"></td>
 731                                                                                 <td class="option-info"><strong>Enable data padding when panning and zooming?</strong><br/>
 732                                                                                         <small>When set to <b>Pad</b> the charts will be padded with more data, both before and after the visible area, thus giving the impression the whole database is loaded. This padding will happen only after the first pan or zoom operation on the chart (initially all charts have only the visible data). When set to <b>Don't Pad</b> only the visible data will be transfered from the netdata server, even after the first pan and zoom operation.</small>
 733                                                                                 </td>
 734                                                                                 </tr>
 735                                                                         <tr class="option-row">
 736                                                                                 <td class="option-control"><input id="smooth_plot" type="checkbox" checked data-toggle="toggle"  data-on="Smooth" data-off="Rough" data-width="110px"></td>
 737                                                                                 <td class="option-info"><strong>Enable Bézier lines on charts?</strong><br/>
 738                                                                                         <small>When set to <b>Smooth</b> the charts libraries that support it, will plot smooth curves instead of simple straight lines to connect the points.
 739                                                                                         <br/>
 740                                                                                         Keep in mind <a href="http://dygraphs.com" target="_blank">dygraphs</a>, the main charting library in netdata dashboards, can only smooth line charts. It cannot smooth area or stacked charts. When set to <b>Rough</b>, this setting can lower the CPU resources consumed by your browser.</small>
 741                                                                                 </td>
 742                                                                                 </tr>
 743                                                                         </table>
 744                                                                 </div>
 745                                                         </form>
 746                                                 </div>
 747                                         </div>
 748                                 </div>
 749                                 <div class="modal-footer">
 750                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 751                                 </div>
 752                         </div>
 753                 </div>
 754         </div>
 755
 756
 757         <div class="modal fade" id="updateModal" tabindex="-1" role="dialog" aria-labelledby="updateModalLabel">
 758                 <div class="modal-dialog" role="document">
 759                         <div class="modal-content">
 760                                 <div class="modal-header">
 761                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 762                                         <h4 class="modal-title" id="updateModalLabel">Update Check</h4>
 763                                 </div>
 764                                 <div class="modal-body">
 765                                         Your netdata version: <b><code><span id="netdataVersion">Unknown</span></code></b>
 766                                         <br/>
 767                                         <div style="padding: 10px;"></div>
 768                                         <div id="versionCheckLog">Not checked yet. Please press the Check Now button.</div>
 769                                 </div>
 770                                 <div class="modal-footer">
 771                                         <a href="#" onclick="notifyForUpdate(true);" type="button" class="btn btn-default">Check Now</a>
 772                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 773                                 </div>
 774                         </div>
 775                 </div>
 776         </div>
 777
 778 <script>
 779
 780 var demo_hostname = 'netdata.firehol.org';
 781 // var demo_hostname = 'box';
 782
 783 if(document.location.hostname === demo_hostname) {
 784         document.getElementById('masthead').style.display = 'block';
 785 }
 786
 787 var options = {
 788         sparklines_registry: {},
 789         submenu_names: {},
 790         data: null,
 791         hostname: 'netdata_server', // will be overwritten by the netdata server
 792         categories: new Array(),
 793         categories_idx: {},
 794         families: new Array(),
 795         families_idx: {},
 796
 797         chartsPerRow: 0,
 798         chartsMinWidth: 1450,
 799         chartsHeight: 180,
 800         sparklinesHeight: 60
 801 };
 802
 803 // generate a sparkline
 804 // used in the documentation
 805 function sparkline(chart, dimension, units) {
 806         var key = chart + '.' + dimension;
 807
 808         if(typeof units === 'undefined')
 809                 units = '';
 810
 811         if(typeof options.sparklines_registry[key] === 'undefined')
 812                 options.sparklines_registry[key] = { count: 1 };
 813         else
 814                 options.sparklines_registry[key].count++;
 815
 816         key = key + '.' + options.sparklines_registry[key].count;
 817
 818         var h = '<div data-netdata="' + chart + '" data-after="-120" data-width="25%" data-height="15px" data-chart-library="dygraph" data-dygraph-theme="sparkline" data-dimensions="' + dimension + '" data-show-value-of-' + dimension + '-at="' + key + '"></div> (<span id="' + key + '" style="display: inline-block; min-width: 50px; text-align: right;">X</span>' + units + ')';
 819
 820         return h;
 821 }
 822
 823 function chartsPerRow(total) {
 824         if(options.chartsPerRow === 0) {
 825                 width = Math.floor(total / options.chartsMinWidth);
 826                 if(width === 0) width = 1;
 827                 return width;
 828         }
 829         else return options.chartsPerRow;
 830 }
 831
 832 function prioritySort(a, b) {
 833         if(a.priority < b.priority) return -1;
 834         if(a.priority > b.priority) return 1;
 835         if(a.name < b.name) return -1;
 836         return 1;
 837 }
 838
 839 function sortObjectByPriority(object) {
 840         var idx = {};
 841         var sorted = new Array();
 842
 843         for(var i in object) {
 844                 if(typeof idx[i] === 'undefined') {
 845                         idx[i] = object[i];
 846                         sorted.push(i);
 847                 }
 848         }
 849
 850         sorted.sort(function(a, b) {
 851                 if(idx[a].priority < idx[b].priority) return -1;
 852                 if(idx[a].priority > idx[b].priority) return 1;
 853                 if(a < b) return -1;
 854                 return 1;
 855         });
 856
 857         return sorted;
 858 }
 859
 860 // ----------------------------------------------------------------------------
 861
 862 function gaugeChart(title, width, dimensions, colors) {
 863         if(typeof colors === 'undefined')
 864                 colors = '';
 865
 866         if(typeof dimensions === 'undefined')
 867                 dimensions = '';
 868
 869         return '<div data-netdata="CHART_UNIQUE_ID"'
 870                                                         + ' data-dimensions="' + dimensions + '"'
 871                                                         + ' data-chart-library="gauge"'
 872                                                         + ' data-gauge-adjust="width"'
 873                                                         + ' data-title="' + title + '"'
 874                                                         + ' data-width="' + width + '"'
 875                                                         + ' data-before="0"'
 876                                                         + ' data-after="-CHART_DURATION"'
 877                                                         + ' data-points="CHART_DURATION"'
 878                                                         + ' data-colors="' + colors + '"'
 879                                                         + ' role="application"></div>';
 880 }
 881
 882 // ----------------------------------------------------------------------------
 883
 884 var menuData = {
 885         'system': {
 886                 title: 'System Overview',
 887                 info: 'Overview of the key system metrics.'
 888         },
 889
 890         'ap': {
 891                 title: 'Access Points',
 892                 info: undefined
 893         },
 894
 895         'tc': {
 896                 title: 'Quality of Service',
 897                 info: 'Netdata collects and visualizes tc class utilization using its <a href="https://github.com/firehol/netdata/blob/master/plugins.d/tc-qos-helper.sh" target="_blank">tc-helper plugin</a>. If you also use <a href="http://firehol.org/#fireqos" target="_blank">FireQOS</a> for setting up QoS, netdata automatically collects interface and class names. If your QoS configuration includes overheads calculation, the values shown here will include these overheads (the total bandwidth for the same interface as reported in the Network Interfaces section, will be lower than the total bandwidth reported here). Also, data collection may have a slight time difference compared to the interface (QoS data collection is implemented with a BASH script, so a shift in data collection of a few milliseconds should be justified).'
 898         },
 899
 900         'net': {
 901                 title: 'Network Interfaces',
 902                 info: 'Per network interface statistics collected from <code>/proc/net/dev</code>.'
 903         },
 904
 905         'ipv4': {
 906                 title: 'IPv4 Networking',
 907                 info: undefined
 908         },
 909
 910         'ipv6': {
 911                 title: 'IPv6 Networking',
 912                 info: undefined
 913         },
 914
 915         'ipvs': {
 916                 title: 'IP Virtual Server',
 917                 info: undefined
 918         },
 919
 920         'netfilter': {
 921                 title: 'Firewall (netfilter)',
 922                 info: undefined
 923         },
 924
 925         'cpu': {
 926                 title: 'CPUs',
 927                 info: undefined
 928         },
 929
 930         'mem': {
 931                 title: 'Memory',
 932                 info: undefined
 933         },
 934
 935         'disk': {
 936                 title: 'Disks',
 937                 info: undefined
 938         },
 939
 940         'sensors': {
 941                 title: 'Sensors',
 942                 info: undefined
 943         },
 944
 945         'nfsd': {
 946                 title: 'File Server (nfsd)',
 947                 info: undefined
 948         },
 949
 950         'apps': {
 951                 title: 'Applications',
 952                 info: 'Per application statistics are collected using netdata\'s <code>apps.plugin</code>. This plugin walks through the entire <code>/proc</code> filesystem and aggregates statistics for applications of interest, defined in <code>/etc/netdata/apps_groups.conf</code> (the default is <a href="https://github.com/firehol/netdata/blob/master/conf.d/apps_groups.conf" target="_blank">here</a>). The plugin internaly builds a process tree (much like <code>ps fax</code> does), and groups processes together (evaluating both child and parent processes) so that the result is always a chart with a predefined set of dimensions (of course, only application groups found running are reported).<br/><b>IMPORTANT</b>: The values shown here are not 100% accurate. They only include values for the processes running. If an application is spawning childs continiously, which are terminated in just a few milliseconds (like shell scripts do), the values reported will be inaccurate. Linux does report the values for the exited childs of a process. However, these values are reported to the parent process <b>only when the child exits</b>. If these values, of the exited child processes, were also aggregated in the charts below, the charts would have been full of spikes, presenting unrealisting utilization for each process group. So, we decided to ignore these values and present only the utilization of <b>the currently running processes</b>.',
 953                 height: 1.5
 954         },
 955
 956         'users': {
 957                 title: 'Users',
 958                 info: 'Per user statistics are collected using netdata\'s <code>apps.plugin</code>. This plugin walks through the entire <code>/proc</code> filesystem and aggregates statistics per user.<br/><b>IMPORTANT</b>: The values shown here are not 100% accurate. They only include values for the processes running. If an application is spawning childs continiously, which are terminated in just a few milliseconds (like shell scripts do), the values reported will be inaccurate. Linux does report the values for the exited childs of a process. However, these values are reported to the parent process <b>only when the child exits</b>. If these values, of the exited child processes, were also aggregated in the charts below, the charts would have been full of spikes, presenting unrealisting utilization for each process group. So, we decided to ignore these values and present only the utilization of <b>the currently running processes</b>.',
 959                 height: 1.5
 960         },
 961
 962         'groups': {
 963                 title: 'User Groups',
 964                 info: 'Per user group statistics are collected using netdata\'s <code>apps.plugin</code>. This plugin walks through the entire <code>/proc</code> filesystem and aggregates statistics per user group.<br/><b>IMPORTANT</b>: The values shown here are not 100% accurate. They only include values for the processes running. If an application is spawning childs continiously, which are terminated in just a few milliseconds (like shell scripts do), the values reported will be inaccurate. Linux does report the values for the exited childs of a process. However, these values are reported to the parent process <b>only when the child exits</b>. If these values, of the exited child processes, were also aggregated in the charts below, the charts would have been full of spikes, presenting unrealisting utilization for each process group. So, we decided to ignore these values and present only the utilization of <b>the currently running processes</b>.',
 965                 height: 1.5
 966         },
 967
 968         'netdata': {
 969                 title: 'Netdata Monitoring',
 970                 info: undefined
 971         },
 972
 973         'example': {
 974                 title: 'Example Charts',
 975                 info: undefined
 976         },
 977 };
 978
 979 var submenuData = {
 980         'mem.ksm': {
 981                 title: 'Memory Deduper',
 982                 info: 'Kernel Same-page Merging (KSM) performance monitoring, read from several files in <code>/sys/kernel/mm/ksm/</code>. KSM is a memory-saving de-duplication feature in the Linux kernel (since version 2.6.32). The KSM daemon ksmd periodically scans those areas of user memory which have been registered with it, looking for pages of identical content which can be replaced by a single write-protected page (which is automatically copied if a process later wants to update its content). KSM was originally developed for use with KVM (where it was known as Kernel Shared Memory), to fit more virtual machines into physical memory, by sharing the data common between them.  But it can be useful to any application which generates many instances of the same data.'
 983         },
 984
 985         'netfilter.conntrack': {
 986                 title: 'Connection Tracker',
 987                 info: 'Netfilter Connection Tracker performance monitoring, read from <code>/proc/net/stat/nf_conntrack</code>. The connection tracker keeps track of all connections of the machine, inbound and outbound. It works by keeping a database with all open connections, tracking network and address translation and connection expectations.'
 988         },
 989
 990         'netfilter.nfacct': {
 991                 title: 'Bandwidth Accounting',
 992                 info: 'The following information is read using the <code>nfacct.plugin</code>.'
 993         },
 994
 995         'netfilter.synproxy': {
 996                 title: 'Anti-DDoS Protection',
 997                 info: 'Anti-DDoS Protection performance monitoring read from <code>/proc/net/stat/synproxy</code>. <a href="https://github.com/firehol/firehol/wiki/Working-with-SYNPROXY" target="_blank">SYNPROXY</a> is a TCP SYN packets proxy. It is used to protect any TCP server (like a web server) from SYN floods and similar DDoS attacks. It is a netfilter module, in the Linux kernel (since version 3.12). It is optimized to handle millions of packets per second utilizing all CPUs available without any concurrency locking between the connections. It can be used for any kind of TCP traffic (even encrypted), since it does not interfere with the content itself.'
 998         }
 999 };
1000
1001 var chartData = {
1002         'system.cpu': {
1003                 info: 'Total CPU utilization (all cores). 100% here means there is no CPU idle time at all. You can get per core usage at the <a href="#cpu">CPUs</a> section and per application usage at the <a href="#apps">Applications Monitoring</a> section.<br/>Keep an eye on <b>iowait</b> ' + sparkline('system.cpu', 'iowait', '%') + '. If it is constantly high, your disks are a bottleneck and they slow your system down.<br/>Another important metric worth monitoring, is <b>softirq</b> ' + sparkline('system.cpu', 'softirq', '%') + '. A constantly high percentage of softirq may indicate network drivers issues.'
1004         },
1005
1006         'system.load': {
1007                 info: 'Current system load read from <code>/proc/loadavg</code>.',
1008                 height: 0.7
1009         },
1010
1011         'system.io': {
1012                 info: 'Total Disk I/O, for all disks, read from <code>/proc/vmstat</code>. You can get detailed information about each disk at the <a href="#disk">Disks</a> section and per application Disk usage at the <a href="#apps">Applications Monitoring</a> section.'
1013         },
1014
1015         'system.swapio': {
1016                 info: 'Total Swap I/O, read from <code>/proc/vmstat</code>. (netdata measures both <code>in</code> and <code>out</code>. If either of them is not shown in the chart, it is because it is zero - you can change the page settings to always render all the available dimensions on all charts).'
1017         },
1018
1019         'system.pgfaults': {
1020                 info: 'Total page faults, read from <code>/proc/vmstat</code>. <b>Major page faults</b> indicates that the system is using its swap. You can find which applications use the swap at the <a href="#apps">Applications Monitoring</a> section.'
1021         },
1022
1023         'system.entropy': {
1024                 colors: '#CC22AA',
1025                 info: '<a href="https://en.wikipedia.org/wiki/Entropy_(computing)" target="_blank">Entropy</a>, read from <code>/proc/sys/kernel/random/entropy_avail</code>, is like a pool of random numbers that are mainly used in cryptography. It is advised that the pool remains always <a href="https://blog.cloudflare.com/ensuring-randomness-with-linuxs-random-number-generator/" target="_blank">above 200</a>. If the pool of entropy gets empty, you risk your security to be predictable and you should install a user-space random numbers generating daemon, like <a href="http://www.issihosts.com/haveged/" target="_blank">haveged</a>, to keep the pool in healthy levels.'
1026         },
1027
1028         'system.forks': {
1029                 colors: '#5555DD',
1030                 info: 'The number of new processes created per second, read from <code>/proc/stat</code>.'
1031         },
1032
1033         'system.intr': {
1034                 colors: '#DD5555',
1035                 info: 'Total number of CPU interrupts, read from <code>/proc/stat</code>. Check <code>system.interrupts</code> that gives more detail about each interrupt and also the <a href="#cpu">CPUs</a> section where interrupts are analyzed per CPU core.'
1036         },
1037
1038         'system.interrupts': {
1039                 info: 'CPU interrupts in detail, read from <code>/proc/interrupts</code>. At the <a href="#cpu">CPUs</a> section, interrupts are analyzed per CPU core.'
1040         },
1041
1042         'system.softirqs': {
1043                 info: 'CPU softirqs in detail, read from <code>/proc/softirqs</code>. At the <a href="#cpu">CPUs</a> section, softirqs are analyzed per CPU core.'
1044         },
1045
1046         'system.processes': {
1047                 info: 'System processes, read from <code>/proc/stat</code>. <b>Blocked</b> are processes that are willing to execute but they cannot, e.g. because they wait for disk activity.'
1048         },
1049
1050         'system.active_processes': {
1051                 info: 'All system active processes, read from <code>/proc/loadavg</code>.'
1052         },
1053
1054         'system.ctxt': {
1055                 info: '<a href="https://en.wikipedia.org/wiki/Context_switch" target="_blank">Context Switches</a>, read from <code>/proc/stat</code>, is the switching of the CPU from one process, task or thread to another. If there are many processes or threads willing to execute and very few CPU cores available to handle them, the system is making more context switching to balance the CPU resources among them. The whole process is computationally intensive. The more the context switches, the slower the system gets.'
1056         },
1057
1058         'system.idlejitter': {
1059                 colors: '#5555AA',
1060                 info: 'Idle jitter is calculated by netdata. A thread is spawned that requests to sleep for a few microseconds. When the system wakes it up, it measures how many microseconds have passed. The difference between the requested and the actual duration of the sleep, is the <b>idle jitter</b>. This number is useful in realtime environments, where CPU jitter can affect the quality of the service (like VoIP media gateways).'
1061         },
1062
1063         'system.ipv4': {
1064                 info: 'Total IPv4 Traffic, read from <code>/proc/net/netstat</code>.'
1065         },
1066
1067         'system.ipv6': {
1068                 info: 'Total IPv6 Traffic, read from <code>/proc/net/snmp6</code>.'
1069         },
1070
1071         'system.ram': {
1072                 info: 'System memory, read from <code>/proc/meminfo</code>.'
1073         },
1074
1075         'system.swap': {
1076                 info: 'System swap memory, read from <code>/proc/meminfo</code>.'
1077         },
1078
1079         'mem.ksm_savings': {
1080                 heads: [
1081                         gaugeChart('Saved', '12%', 'savings', '#0099CC')
1082                 ]
1083         },
1084
1085         'mem.ksm_ratios': {
1086                 heads: [
1087                         function(id) {
1088                                 return  '<div data-netdata="' + id + '"'
1089                                         + ' data-gauge-max-value="100"'
1090                                         + ' data-chart-library="gauge"'
1091                                         + ' data-title="Savings"'
1092                                         + ' data-units="percentage %"'
1093                                         + ' data-gauge-adjust="width"'
1094                                         + ' data-width="12%"'
1095                                         + ' data-before="0"'
1096                                         + ' data-after="-CHART_DURATION"'
1097                                         + ' data-points="CHART_DURATION"'
1098                                         + ' role="application"></div>';
1099                         }
1100                 ]
1101         },
1102
1103         'mem.committed': {
1104                 colors: NETDATA.colors[3]
1105         },
1106
1107         'apps.cpu': {
1108                 height: 2.0
1109         },
1110
1111         'apps.preads': {
1112                 height: 2.0
1113         },
1114
1115         'apps.pwrites': {
1116                 height: 2.0
1117         },
1118
1119         'users.cpu': {
1120                 height: 2.0
1121         },
1122
1123         'users.preads': {
1124                 height: 2.0
1125         },
1126
1127         'users.pwrites': {
1128                 height: 2.0
1129         },
1130
1131         'groups.cpu': {
1132                 height: 2.0
1133         },
1134
1135         'groups.preads': {
1136                 height: 2.0
1137         },
1138
1139         'groups.pwrites': {
1140                 height: 2.0
1141         },
1142
1143         'tc.qos': {
1144                 heads: [
1145                         function(id) {
1146                                 if(id.match(/.*-ifb$/))
1147                                         return gaugeChart('Inbound', '12%', '', '#5555AA');
1148                                 else
1149                                         return gaugeChart('Outbound', '12%', '', '#AA9900');
1150                         }
1151                 ]
1152         },
1153
1154         'net.net': {
1155                 heads: [
1156                         gaugeChart('Received', '12%', 'received'),
1157                         gaugeChart('Sent', '12%', 'sent')
1158                 ]
1159         },
1160
1161         'disk.util': {
1162                 colors: '#FF5588',
1163                 heads: [
1164                         gaugeChart('Utilization', '12%', '', '#FF5588')
1165                 ]
1166         },
1167
1168         'disk.backlog': {
1169                 colors: '#0099CC'
1170         },
1171
1172         'disk.io': {
1173                 heads: [
1174                         gaugeChart('Read', '12%', 'reads'),
1175                         gaugeChart('Write', '12%', 'writes')
1176                 ]
1177         },
1178
1179         'netfilter.sockets': {
1180                 colors: '#88AA00',
1181                 heads: [
1182                         gaugeChart('Active Connections', '12%', '', '#88AA00')
1183                 ]
1184         },
1185
1186         'netfilter.new': {
1187                 heads: [
1188                         gaugeChart('New Connections', '12%', 'new', '#5555AA')
1189                 ]
1190         },
1191
1192         'disk.iotime': {
1193                 height: 0.5
1194         },
1195         'disk.mops': {
1196                 height: 0.5
1197         },
1198         'disk.svctm': {
1199                 height: 0.5
1200         },
1201         'disk.avgsz': {
1202                 height: 0.5
1203         },
1204         'disk.await': {
1205                 height: 0.5
1206         },
1207
1208         'apache.connections': {
1209                 colors: NETDATA.colors[4],
1210                 mainheads: [
1211                         gaugeChart('Connections', '12%', '', NETDATA.colors[4])
1212                 ]
1213         },
1214
1215         'apache.requests': {
1216                 colors: NETDATA.colors[0],
1217                 mainheads: [
1218                         gaugeChart('Connections', '12%', '', NETDATA.colors[0])
1219                 ]
1220         },
1221
1222         'apache.net': {
1223                 colors: NETDATA.colors[3],
1224                 mainheads: [
1225                         gaugeChart('Bandwidth', '12%', '', NETDATA.colors[3])
1226                 ]
1227         },
1228
1229         'apache.workers': {
1230                 mainheads: [
1231                         function(id) {
1232                                 return  '<div data-netdata="' + id + '"'
1233                                         + ' data-dimensions="busy"'
1234                                         + ' data-append-options="percentage"'
1235                                         + ' data-gauge-max-value="100"'
1236                                         + ' data-chart-library="gauge"'
1237                                         + ' data-title="Workers Utilization"'
1238                                         + ' data-units="percentage %"'
1239                                         + ' data-gauge-adjust="width"'
1240                                         + ' data-width="12%"'
1241                                         + ' data-before="0"'
1242                                         + ' data-after="-CHART_DURATION"'
1243                                         + ' data-points="CHART_DURATION"'
1244                                         + ' role="application"></div>';
1245                         }
1246                 ]
1247         },
1248
1249         'apache.bytesperreq': {
1250                 colors: NETDATA.colors[3],
1251                 height: 0.5
1252         },
1253
1254         'apache.reqpersec': {
1255                 colors: NETDATA.colors[4],
1256                 height: 0.5
1257         },
1258
1259         'apache.bytespersec': {
1260                 colors: NETDATA.colors[6],
1261                 height: 0.5
1262         },
1263
1264         'nginx.connections': {
1265                 colors: NETDATA.colors[4],
1266                 mainheads: [
1267                         gaugeChart('Connections', '12%', '', NETDATA.colors[4])
1268                 ]
1269         },
1270
1271         'nginx.requests': {
1272                 colors: NETDATA.colors[0],
1273                 mainheads: [
1274                         gaugeChart('Requests', '12%', '', NETDATA.colors[0])
1275                 ]
1276         }
1277 };
1278
1279 function anyAttribute(obj, attr, key, def) {
1280         if(typeof obj[key] !== 'undefined') {
1281                 if(typeof obj[key][attr] !== 'undefined')
1282                         return obj[key][attr];
1283         }
1284         return def;
1285 }
1286
1287 function menuTitle(menu) {
1288         return anyAttribute(menuData, 'title', menu, menu);
1289 }
1290
1291 function menuInfo(menu) {
1292         return anyAttribute(menuData, 'info', menu, null);
1293 }
1294
1295 function menuHeight(menu, relative) {
1296         return anyAttribute(menuData, 'height', menu, 1.0) * relative;
1297 }
1298
1299 function submenuTitle(menu, submenu) {
1300         var key = menu + '.' + submenu;
1301         return anyAttribute(submenuData, 'title', key, submenu);
1302 }
1303
1304 function submenuInfo(menu, submenu) {
1305         var key = menu + '.' + submenu;
1306         return anyAttribute(submenuData, 'info', key, null);
1307 }
1308
1309 function submenuHeight(menu, submenu, relative) {
1310         var key = menu + '.' + submenu;
1311         return anyAttribute(submenuData, 'height', key, 1.0) * relative;
1312 }
1313
1314
1315 function chartInfo(id) {
1316         if(typeof chartData[id] !== 'undefined' && typeof chartData[id].info !== 'undefined')
1317                 return '<div class="chart-message netdata-chart-alignment" role="document">' + chartData[id].info + '</div>';
1318         else
1319                 return '';
1320 }
1321
1322 function chartHeight(id, def) {
1323         if(typeof chartData[id] !== 'undefined' && typeof chartData[id].height !== 'undefined')
1324                 return def * chartData[id].height;
1325         else
1326                 return def;
1327 }
1328
1329
1330 // ----------------------------------------------------------------------------
1331
1332 // enrich the data structure returned by netdata
1333 // to reflect our menu system and content
1334 function enrichChartData(chart) {
1335         var tmp = chart.type.split('_')[0];
1336
1337         switch(tmp) {
1338                 case 'ap':
1339                 case 'net':
1340                 case 'disk':
1341                         chart.menu = tmp;
1342                         break;
1343
1344                 case 'tc':
1345                         chart.menu = tmp;
1346
1347                         // find the interface name from the name
1348                         if(typeof options.submenu_names[chart.family] === 'undefined' || options.submenu_names[chart.family] === chart.family)
1349                                 options.submenu_names[chart.family] = chart.name.split('.')[1].split('_')[0];
1350
1351                         // increase the priority of IFB devices
1352                         if(chart.id.match(/.*-ifb$/))
1353                                 chart.priority--;
1354
1355                         break;
1356
1357                 default:
1358                         chart.menu = chart.type;
1359                         break;
1360         }
1361
1362         chart.submenu = chart.family;
1363 }
1364
1365 // ----------------------------------------------------------------------------
1366
1367 function name2id(s) {
1368         return s
1369                 .replace(' ', '_')
1370                 .replace('(', '_')
1371                 .replace(')', '_')
1372                 .replace('.', '_')
1373                 .replace('/', '_');
1374 }
1375
1376 function headMain(charts, duration) {
1377         var head = '';
1378
1379         if(typeof charts['system.swap'] !== 'undefined')
1380                 head += '<div style="margin-right: 10px;" data-netdata="system.swap"'
1381                 + ' data-dimensions="free"'
1382                 + ' data-append-options="percentage"'
1383                 + ' data-chart-library="easypiechart"'
1384                 + ' data-title="Free Swap"'
1385                 + ' data-units="%"'
1386                 + ' data-easypiechart-max-value="100"'
1387                 + ' data-width="8%"'
1388                 + ' data-before="0"'
1389                 + ' data-after="-' + duration.toString() + '"'
1390                 + ' data-points="' + duration.toString() + '"'
1391                 + ' data-colors="#DD4400"'
1392                 + ' role="application"></div>';
1393
1394         if(typeof charts['system.io'] !== 'undefined') {
1395                 head += '<div style="margin-right: 10px;" data-netdata="system.io"'
1396                 + ' data-dimensions="in"'
1397                 + ' data-chart-library="easypiechart"'
1398                 + ' data-title="Disk Read"'
1399                 + ' data-units="KB / s"'
1400                 + ' data-width="10%"'
1401                 + ' data-before="0"'
1402                 + ' data-after="-' + duration.toString() + '"'
1403                 + ' data-points="' + duration.toString() + '"'
1404                 + ' role="application"></div>';
1405
1406                 head += '<div style="margin-right: 10px;" data-netdata="system.io"'
1407                 + ' data-dimensions="out"'
1408                 + ' data-chart-library="easypiechart"'
1409                 + ' data-title="Disk Write"'
1410                 + ' data-units="KB / s"'
1411                 + ' data-width="10%"'
1412                 + ' data-before="0"'
1413                 + ' data-after="-' + duration.toString() + '"'
1414                 + ' data-points="' + duration.toString() + '"'
1415                 + ' role="application"></div>';
1416         }
1417
1418         if(typeof charts['system.cpu'] !== 'undefined')
1419                 head += '<div data-netdata="system.cpu"'
1420                 + ' data-chart-library="gauge"'
1421                 + ' data-title="CPU"'
1422                 + ' data-units="%"'
1423                 + ' data-gauge-max-value="100"'
1424                 + ' data-width="18%"'
1425                 + ' data-after="-' + duration.toString() + '"'
1426                 + ' data-points="' + duration.toString() + '"'
1427                 + ' data-colors="' + NETDATA.colors[12] + '"'
1428                 + ' role="application"></div>';
1429
1430         if(typeof charts['system.ipv4'] !== 'undefined') {
1431                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv4"'
1432                 + ' data-dimensions="received"'
1433                 + ' data-chart-library="easypiechart"'
1434                 + ' data-title="IPv4 Inbound"'
1435                 + ' data-units="kbps"'
1436                 + ' data-width="10%"'
1437                 + ' data-before="0"'
1438                 + ' data-after="-' + duration.toString() + '"'
1439                 + ' data-points="' + duration.toString() + '"'
1440                 + ' role="application"></div>';
1441
1442                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv4"'
1443                 + ' data-dimensions="sent"'
1444                 + ' data-chart-library="easypiechart"'
1445                 + ' data-title="IPv4 Outbound"'
1446                 + ' data-units="kbps"'
1447                 + ' data-width="10%"'
1448                 + ' data-before="0"'
1449                 + ' data-after="-' + duration.toString() + '"'
1450                 + ' data-points="' + duration.toString() + '"'
1451                 + ' role="application"></div>';
1452         }
1453         else if(typeof charts['system.ipv6'] !== 'undefined') {
1454                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv6"'
1455                 + ' data-dimensions="received"'
1456                 + ' data-chart-library="easypiechart"'
1457                 + ' data-title="IPv6 Inbound"'
1458                 + ' data-units="kbps"'
1459                 + ' data-width="10%"'
1460                 + ' data-before="0"'
1461                 + ' data-after="-' + duration.toString() + '"'
1462                 + ' data-points="' + duration.toString() + '"'
1463                 + ' role="application"></div>';
1464
1465                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv6"'
1466                 + ' data-dimensions="sent"'
1467                 + ' data-chart-library="easypiechart"'
1468                 + ' data-title="IPv6 Outbound"'
1469                 + ' data-units="kbps"'
1470                 + ' data-width="10%"'
1471                 + ' data-before="0"'
1472                 + ' data-after="-' + duration.toString() + '"'
1473                 + ' data-points="' + duration.toString() + '"'
1474                 + ' role="application"></div>';
1475         }
1476
1477         if(typeof charts['system.ram'] !== 'undefined')
1478                 head += '<div style="margin-right: 10px;" data-netdata="system.ram"'
1479                 + ' data-dimensions="cached|free"'
1480                 + ' data-append-options="percentage"'
1481                 + ' data-chart-library="easypiechart"'
1482                 + ' data-title="Available RAM"'
1483                 + ' data-units="%"'
1484                 + ' data-easypiechart-max-value="100"'
1485                 + ' data-width="8%"'
1486                 + ' data-after="-' + duration.toString() + '"'
1487                 + ' data-points="' + duration.toString() + '"'
1488                 + ' data-colors="' + NETDATA.colors[7] + '"'
1489                 + ' role="application"></div>';
1490
1491         return head;
1492 }
1493
1494 function generateHeadCharts(type, chart, duration) {
1495         var head = '';
1496         var hcharts = anyAttribute(chartData, type, chart.context, []);
1497         if(hcharts.length > 0) {
1498                 var hi = 0, hlen = hcharts.length;
1499                 while(hi < hlen) {
1500                         if(typeof hcharts[hi] === 'function')
1501                                 head += hcharts[hi](chart.id).replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
1502                         else
1503                                 head += hcharts[hi].replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
1504                         hi++;
1505                 }
1506         }
1507         return head;
1508 }
1509
1510 function renderPage(menus, data) {
1511         var div = document.getElementById('charts_div');
1512         var pcent_width = Math.floor(100 / chartsPerRow($(div).width()));
1513
1514         // find the proper duration for per-second updates
1515         var duration = Math.round(($(div).width() * pcent_width / 100 * data.update_every / 3) / 60) * 60;
1516         var html = '';
1517         var sidebar = '<ul class="nav dashboard-sidenav" data-spy="affix" id="sidebar_ul">';
1518         var mainhead = headMain(data.charts, duration);
1519
1520         // sort the menus
1521         var main = sortObjectByPriority(menus);
1522         var i = 0, len = main.length;
1523         while(i < len) {
1524                 var menu = main[i++];
1525
1526                 // generate an entry at the main menu
1527
1528                 sidebar += '<li class=""><a href="#' + menu + '">' + menus[menu].title + '</a><ul class="nav">';
1529                 html += '<div role="section"><div role="sectionhead"><h1 id="' + menu + '" role="heading">' + menus[menu].title + '</h1></div><div id="' + menu + '" role="document">';
1530
1531                 if(menus[menu].info !== null)
1532                         html += menus[menu].info;
1533
1534                 // console.log(' >> ' + menu + ' (' + menus[menu].priority + '): ' + menus[menu].title);
1535
1536                 var shtml = '';
1537                 var mhead = '<div style="width: 100%; text-align: center;">' + mainhead;
1538                 mainhead = '';
1539
1540                 // sort the submenus of this menu
1541                 var sub = sortObjectByPriority(menus[menu].submenus);
1542                 var si = 0, slen = sub.length;
1543                 while(si < slen) {
1544                         var submenu = sub[si++];
1545
1546                         // generate an entry at the submenu
1547                         sidebar += '<li class><a href="#' + name2id(menu + '_' + submenu) + '">' + menus[menu].submenus[submenu].title + '</a></li>';
1548                         shtml += '<div class="netdata-group-container" id="submenu_' + name2id(menu + '_' + submenu) + '" style="display: inline-block; width: ' + pcent_width.toString() + '%"><h2 id="' + name2id(menu + '_' + submenu) + '" class="netdata-chart-alignment" role="heading">' + menus[menu].submenus[submenu].title + '</h2>';
1549
1550                         if(menus[menu].submenus[submenu].info !== null)
1551                                 shtml += '<div class="chart-message netdata-chart-alignment" role="document">' + menus[menu].submenus[submenu].info + '</div>';
1552
1553                         var head = '<div style="width: 100%; text-align: center;">';
1554                         var chtml = '';
1555
1556                         // console.log('    \------- ' + submenu + ' (' + menus[menu].submenus[submenu].priority + '): ' + menus[menu].submenus[submenu].title);
1557
1558                         // sort the charts in this submenu of this menu
1559                         menus[menu].submenus[submenu].charts.sort(prioritySort);
1560                         var ci = 0, clen = menus[menu].submenus[submenu].charts.length;
1561                         while(ci < clen) {
1562                                 var chart = menus[menu].submenus[submenu].charts[ci++];
1563
1564                                 // generate the submenu heading charts
1565                                 mhead += generateHeadCharts('mainheads', chart, duration);
1566                                 head += generateHeadCharts('heads', chart, duration);
1567
1568                                 // generate the chart
1569                                 chtml += chartInfo(chart.context) + '<div data-netdata="' + chart.id + '"'
1570                                         + ' data-width="' + pcent_width.toString() + '%"'
1571                                         + ' data-height="' + chartHeight(chart.context, options.chartsHeight).toString() + 'px"'
1572                                         + ' data-before="0"'
1573                                         + ' data-after="-' + duration.toString() + '"'
1574                                         + ' data-id="' + name2id(options.hostname + '/' + chart.id) + '"'
1575                                         + ' data-colors="' + anyAttribute(chartData, 'colors', chart.context, '') + '"'
1576                                         + ' role="application"></div>';
1577
1578                                 // console.log('         \------- ' + chart.id + ' (' + chart.priority + '): ' + chart.context  + ' height: ' + menus[menu].submenus[submenu].height);
1579                         }
1580
1581                         head += '</div>';
1582                         shtml += head + chtml + '</div>';
1583                 }
1584
1585                 mhead += '</div>';
1586                 sidebar += '</ul></li>';
1587                 html += mhead + shtml + '</div></div><hr role="separator"/>';
1588         }
1589
1590         sidebar += '</ul>';
1591         div.innerHTML = html;
1592         document.getElementById('sidebar').innerHTML = sidebar;
1593         finalizePage();
1594 }
1595
1596 function renderChartsAndMenu(data) {
1597         var menus = {};
1598         var charts = data.charts;
1599
1600         for(var c in charts) {
1601                 enrichChartData(charts[c]);
1602
1603                 // create the menu
1604                 if(typeof menus[charts[c].menu] === 'undefined') {
1605                         menus[charts[c].menu] = {
1606                                 priority: charts[c].priority,
1607                                 submenus: {},
1608                                 title: menuTitle(charts[c].menu),
1609                                 info: menuInfo(charts[c].menu),
1610                                 height: menuHeight(charts[c].menu, options.chartsHeight)
1611                         };
1612                 }
1613
1614                 if(charts[c].priority < menus[charts[c].menu].priority)
1615                         menus[charts[c].menu].priority = charts[c].priority;
1616
1617                 // create the submenu
1618                 if(typeof menus[charts[c].menu].submenus[charts[c].submenu] === 'undefined') {
1619                         menus[charts[c].menu].submenus[charts[c].submenu] = {
1620                                 priority: charts[c].priority,
1621                                 charts: new Array(),
1622                                 title: null,
1623                                 info: submenuInfo(charts[c].menu, charts[c].submenu),
1624                                 height: submenuHeight(charts[c].menu, charts[c].submenu, menus[charts[c].menu].height)
1625                         };
1626                 }
1627
1628                 if(charts[c].priority < menus[charts[c].menu].submenus[charts[c].submenu].priority)
1629                         menus[charts[c].menu].submenus[charts[c].submenu].priority = charts[c].priority;
1630
1631                 // index the chart in the menu/submenu
1632                 menus[charts[c].menu].submenus[charts[c].submenu].charts.push(charts[c]);
1633         }
1634
1635         for(var m in menus) {
1636                 for(var s in menus[m].submenus) {
1637                         // set the family using a name
1638                         if(typeof options.submenu_names[s] !== 'undefined') {
1639                                 menus[m].submenus[s].title = s + ' (' + options.submenu_names[s] + ')';
1640                         }
1641                         else {
1642                                 menus[m].submenus[s].title = submenuTitle(m, s);
1643                         }
1644                 }
1645         }
1646
1647         renderPage(menus, data);
1648 }
1649
1650 function downloadAllCharts(netdata_url) {
1651         if(typeof netdata_url === 'undefined' || netdata_url === null)
1652                 netdata_url = NETDATA.serverDefault;
1653
1654         NETDATA.pause(function() {
1655
1656                 // download all the charts the server knows
1657                 NETDATA.chartRegistry.downloadAll(netdata_url, function(data) {
1658
1659                         options.data = data;
1660                         options.hostname = data.hostname;
1661                         document.getElementById('hostname').innerHTML = options.hostname;
1662                         document.getElementById('hostname').href = NETDATA.serverDefault;
1663                         document.title = options.hostname + ' dashboard';
1664
1665                         renderChartsAndMenu(data);
1666
1667                         // prepare our DOM
1668 //                      prepareScreen(data);
1669
1670                         // due to affix issues, prepareScreen() will unpause
1671                         // netdata as needed
1672                 });
1673         });
1674 }
1675
1676 // ----------------------------------------------------------------------------
1677
1678 function versionLog(msg) {
1679         document.getElementById('versionCheckLog').innerHTML = msg;
1680 }
1681
1682 function getNetdataVersion(callback) {
1683         versionLog('Downloading installed version info from netdata...');
1684
1685         $.ajax({
1686                 url: 'version.txt',
1687                 async: true,
1688                 cache: false
1689         })
1690         .done(function(data) {
1691                 data = data.replace(/(\r\n|\n|\r| |\t)/gm,"");
1692                 if(data.length !== 40) {
1693                         versionLog('Received version string is invalid.');
1694                         callback(null);
1695                 }
1696                 else {
1697                         versionLog('Installed version of netdata is ' + data);
1698                         document.getElementById('netdataVersion').innerHTML = data;
1699                         callback(data);
1700                 }
1701         })
1702         .fail(function() {
1703                 versionLog('Failed to download installed version info from netdata!');
1704                 callback(null);
1705         });
1706 }
1707
1708 function getGithubLatestCommit(callback) {
1709         versionLog('Downloading latest version info from github...');
1710
1711         $.ajax({
1712                 url: 'https://api.github.com/repos/firehol/netdata/commits',
1713                 async: true,
1714                 cache: false
1715         })
1716         .done(function(data) {
1717                 versionLog('Latest version info from github is ' + data[0].sha);
1718                 callback(data[0].sha);
1719         })
1720         .fail(function() {
1721                 versionLog('Failed to download installed version info from github!');
1722                 callback(null);
1723         });
1724 }
1725
1726 function checkForUpdate(callback) {
1727         getNetdataVersion(function(sha1) {
1728                 if(sha1 === null) callback(null, null);
1729
1730                 getGithubLatestCommit(function(sha2) {
1731                         callback(sha1, sha2);
1732                 });
1733         });
1734
1735         return null;
1736 }
1737
1738 var updateBlinkCounter = 0;
1739 function notifyForUpdate(force) {
1740         versionLog('<p>checking for updates...</p>');
1741
1742         var now = new Date().getTime();
1743
1744         if(typeof force === 'undefined' || force !== true) {
1745                 var last = loadLocalStorage('last_update_check');
1746
1747                 if(typeof last === 'string')
1748                         last = parseInt(last);
1749                 else
1750                         last = 0;
1751
1752                 if(now - last < 3600000 * 8) {
1753                         // no need to check it - too soon
1754                         return;
1755                 }
1756         }
1757
1758         checkForUpdate(function(sha1, sha2) {
1759                 var save = false;
1760
1761                 if(sha1 === null) {
1762                         save = false;
1763                         versionLog('<p><big>Failed to get your netdata version!</big></p><p>You can always get the latest version of netdata from <a href="https://github.com/firehol/netdata" target="_blank">its github page</a>.</p>');
1764                 }
1765                 else if(sha2 === null) {
1766                         save = false;
1767                         versionLog('<p><big>Failed to get the latest version from github.</big></p><p>You can always get the latest version of netdata from <a href="https://github.com/firehol/netdata" target="_blank">its github page</a>.</p>');
1768                 }
1769                 else if(sha1 === sha2) {
1770                         save = true;
1771                         versionLog('<p><big>You already have the latest version of netdata!</big></p><p>No update yet?<br/>Probably, we need some motivation to keep going on!</p><p>If you haven\'t already, <a href="https://github.com/firehol/netdata" target="_blank">give netdata a <b>Star</b> at its github page</a>.</p>');
1772                 }
1773                 else {
1774                         save = true;
1775                         var compare = 'https://github.com/firehol/netdata/compare/' + sha1.toString() + '...' + sha2.toString();
1776
1777                         versionLog('<p><big><strong>New version of netdata available!</strong></big></p><p>Latest version: ' + sha2.toString() + '</p><p><a href="' + compare + '" target="_blank">Click here for the changes log</a> since your installed version, and<br/><a href="https://github.com/firehol/netdata/wiki/Updating-Netdata" target="_blank">click here for directions on updating</a> your netdata installation.</p><p>We suggest to review the changes log for new features you may be interested, or important bug fixes you may need.<br/>Keeping your netdata updated, is generally a good idea.</p>');
1778
1779                         function updateButtonBlink() {
1780                                 updateBlinkCounter--;
1781                                 if(updateBlinkCounter > 0)
1782                                         $('#updateButton').fadeOut(500).fadeIn(500, updateButtonBlink);
1783                         }
1784
1785                         if(updateBlinkCounter === 0) {
1786                                 updateBlinkCounter = 300;
1787                                 updateButtonBlink();
1788                         }
1789                 }
1790
1791                 if(save)
1792                         saveLocalStorage('last_update_check', now.toString());
1793         });
1794 }
1795
1796 // ----------------------------------------------------------------------------
1797
1798 function getUrlParameter(sParam) {
1799     var sPageURL = decodeURIComponent(window.location.search.substring(1)),
1800         sURLVariables = sPageURL.split('&'),
1801         sParameterName,
1802         i;
1803
1804     for (i = 0; i < sURLVariables.length; i++) {
1805         sParameterName = sURLVariables[i].split('=');
1806
1807         if (sParameterName[0] === sParam) {
1808             return sParameterName[1] === undefined ? true : sParameterName[1];
1809         }
1810     }
1811 }
1812
1813 function finalizePage() {
1814         // resize all charts - without starting the background thread
1815         // this has to be done while NETDATA is paused
1816         // if we ommit this, the affix menu will be wrong, since all
1817         // the Dom elements are initially zero-sized
1818         NETDATA.parseDom();
1819
1820         var before = 0, after = 0;
1821         after = getUrlParameter('force_after_ms');
1822         before = getUrlParameter('force_before_ms');
1823
1824         if(before > 0 && after > 0)
1825                 NETDATA.globalPanAndZoom.setMaster(NETDATA.options.targets[0], after, before);
1826
1827         // let it run (update the charts)
1828         NETDATA.unpause();
1829
1830         // check if we have to jump to a specific section
1831         var hash = location.hash.replace('#','');
1832         if(hash != '') {
1833                 // Clear the hash in the URL
1834                 // location.hash = '';   // delete front "//" if you want to change the address bar
1835                 var offset = $(location.hash).offset();
1836                 if(typeof offset !== 'undefined')
1837                         $('html, body').animate({ scrollTop: offset.top }, 0);
1838         }
1839
1840         /* activate bootstrap sidebar (affix) */
1841         $('#sidebar').affix({
1842                 offset: {
1843                         top: (document.location.hostname === demo_hostname)?150:0,
1844                         bottom: 0
1845                 }
1846         });
1847
1848         /* fix scrolling of very long affix lists
1849            http://stackoverflow.com/questions/21691585/bootstrap-3-1-0-affix-too-long
1850          */
1851         $('#sidebar').on('affixed.bs.affix', function() {
1852                 $(this).removeAttr('style');
1853         });
1854
1855         /* activate bootstrap scrollspy (needed for sidebar) */
1856         $(document.body).scrollspy({
1857                 target: '#sidebar',
1858                 offset: $(window).height() / 3 // controls the diff of the <hX> element to the top, to select it
1859         });
1860
1861         document.getElementById('footer').style.display = 'block';
1862
1863
1864         var update_options_modal = function() {
1865                 // console.log('update_options_modal');
1866
1867                 var sync_option = function(option) {
1868                         var self = $('#' + option);
1869
1870                         if(self.prop('checked') !== NETDATA.getOption(option)) {
1871                                 // console.log('switching ' + option.toString());
1872                                 self.bootstrapToggle(NETDATA.getOption(option)?'on':'off');
1873                         }
1874                 }
1875
1876                 var theme_sync_option = function(option) {
1877                         var self = $('#' + option);
1878
1879                         self.bootstrapToggle(netdataTheme === 'slate'?'on':'off');
1880                 }
1881
1882                 sync_option('eliminate_zero_dimensions');
1883                 sync_option('destroy_on_hide');
1884                 sync_option('parallel_refresher');
1885                 sync_option('concurrent_refreshes');
1886                 sync_option('sync_selection');
1887                 sync_option('sync_pan_and_zoom');
1888                 sync_option('stop_updates_when_focus_is_lost');
1889                 sync_option('smooth_plot');
1890                 sync_option('pan_and_zoom_data_padding');
1891                 sync_option('show_help');
1892                 theme_sync_option('netdata_theme_control');
1893
1894                 if(NETDATA.getOption('parallel_refresher') === false) {
1895                         $('#concurrent_refreshes_row').hide();
1896                 }
1897                 else {
1898                         $('#concurrent_refreshes_row').show();
1899                 }
1900         };
1901         NETDATA.setOption('setOptionCallback', update_options_modal);
1902
1903         // handle options changes
1904         $('#eliminate_zero_dimensions').change(function()       { NETDATA.setOption('eliminate_zero_dimensions', $(this).prop('checked')); });
1905         $('#destroy_on_hide').change(function()                 { NETDATA.setOption('destroy_on_hide', $(this).prop('checked')); });
1906         $('#parallel_refresher').change(function()              { NETDATA.setOption('parallel_refresher', $(this).prop('checked')); });
1907         $('#concurrent_refreshes').change(function()            { NETDATA.setOption('concurrent_refreshes', $(this).prop('checked')); });
1908         $('#sync_selection').change(function()                  { NETDATA.setOption('sync_selection', $(this).prop('checked')); });
1909         $('#sync_pan_and_zoom').change(function()               { NETDATA.setOption('sync_pan_and_zoom', $(this).prop('checked')); });
1910         $('#stop_updates_when_focus_is_lost').change(function() { NETDATA.setOption('stop_updates_when_focus_is_lost', $(this).prop('checked')); });
1911         $('#smooth_plot').change(function()                     { NETDATA.setOption('smooth_plot', $(this).prop('checked')); });
1912         $('#pan_and_zoom_data_padding').change(function()       { NETDATA.setOption('pan_and_zoom_data_padding', $(this).prop('checked')); });
1913         $('#show_help').change(function()                       { NETDATA.setOption('show_help', $(this).prop('checked')); location.reload(); });
1914
1915         // this has to be the last
1916         // it reloads the page
1917         $('#netdata_theme_control').change(function() {
1918                 if(setTheme($(this).prop('checked')?'slate':'default'))
1919                         location.reload();
1920         });
1921
1922         if(document.location.hostname === demo_hostname) {
1923                 setTimeout(function() {
1924                         $('#welcomeModal').modal();
1925                 }, 1000);
1926         }
1927         else
1928                 notifyForUpdate();
1929
1930         $('#updateModal').on('shown.bs.modal', function() {
1931                 notifyForUpdate(true);
1932         });
1933 }
1934
1935 function resetDashboardOptions() {
1936         var help = NETDATA.options.current.show_help;
1937
1938         NETDATA.resetOptions();
1939         if(setTheme('slate'))
1940                 location.reload();
1941
1942         if(help !== NETDATA.options.current.show_help)
1943                 location.reload();
1944 }
1945
1946 downloadAllCharts();
1947
1948 </script>
1949
1950 </body>
1951 </html>