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?v26"></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>.</small>
 715                                                                                 </td>
 716                                                                                 </tr>
 717                                                                         <tr class="option-row">
 718                                                                                 <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>
 719                                                                                 <td class="option-info"><strong>Enable data padding when panning and zooming?</strong><br/>
 720                                                                                         <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>
 721                                                                                 </td>
 722                                                                                 </tr>
 723                                                                         <tr class="option-row">
 724                                                                                 <td class="option-control"><input id="smooth_plot" type="checkbox" checked data-toggle="toggle"  data-on="Smooth" data-off="Rough" data-width="110px"></td>
 725                                                                                 <td class="option-info"><strong>Enable Bézier lines on charts?</strong><br/>
 726                                                                                         <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.</small>
 727                                                                                 </td>
 728                                                                                 </tr>
 729                                                                         </table>
 730                                                                 </div>
 731                                                         </form>
 732                                                 </div>
 733                                         </div>
 734                                 </div>
 735                                 <div class="modal-footer">
 736                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 737                                 </div>
 738                         </div>
 739                 </div>
 740         </div>
 741
 742
 743         <div class="modal fade" id="updateModal" tabindex="-1" role="dialog" aria-labelledby="updateModalLabel">
 744                 <div class="modal-dialog" role="document">
 745                         <div class="modal-content">
 746                                 <div class="modal-header">
 747                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 748                                         <h4 class="modal-title" id="updateModalLabel">Update Check</h4>
 749                                 </div>
 750                                 <div class="modal-body">
 751                                         Your netdata version: <b><code><span id="netdataVersion">Unknown</span></code></b>
 752                                         <br/>
 753                                         <div style="padding: 10px;"></div>
 754                                         <div id="versionCheckLog">Not checked yet. Please press the Check Now button.</div>
 755                                 </div>
 756                                 <div class="modal-footer">
 757                                         <a href="#" onclick="notifyForUpdate(true);" type="button" class="btn btn-default">Check Now</a>
 758                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 759                                 </div>
 760                         </div>
 761                 </div>
 762         </div>
 763
 764 <script>
 765
 766 var demo_hostname = 'netdata.firehol.org';
 767 // var demo_hostname = 'box';
 768
 769 if(document.location.hostname === demo_hostname) {
 770         document.getElementById('masthead').style.display = 'block';
 771 }
 772
 773 var options = {
 774         sparklines_registry: {},
 775         submenu_names: {},
 776         data: null,
 777         hostname: 'netdata_server', // will be overwritten by the netdata server
 778         categories: new Array(),
 779         categories_idx: {},
 780         families: new Array(),
 781         families_idx: {},
 782
 783         chartsPerRow: 0,
 784         chartsMinWidth: 1450,
 785         chartsHeight: 180,
 786         sparklinesHeight: 60
 787 };
 788
 789 // generate a sparkline
 790 // used in the documentation
 791 function sparkline(chart, dimension, units) {
 792         var key = chart + '.' + dimension;
 793
 794         if(typeof units === 'undefined')
 795                 units = '';
 796
 797         if(typeof options.sparklines_registry[key] === 'undefined')
 798                 options.sparklines_registry[key] = { count: 1 };
 799         else
 800                 options.sparklines_registry[key].count++;
 801
 802         key = key + '.' + options.sparklines_registry[key].count;
 803
 804         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 + ')';
 805
 806         return h;
 807 }
 808
 809 function chartsPerRow(total) {
 810         if(options.chartsPerRow === 0) {
 811                 width = Math.floor(total / options.chartsMinWidth);
 812                 if(width === 0) width = 1;
 813                 return width;
 814         }
 815         else return options.chartsPerRow;
 816 }
 817
 818 function prioritySort(a, b) {
 819         if(a.priority < b.priority) return -1;
 820         if(a.priority > b.priority) return 1;
 821         if(a.name < b.name) return -1;
 822         return 1;
 823 }
 824
 825 function sortObjectByPriority(object) {
 826         var idx = {};
 827         var sorted = new Array();
 828
 829         for(var i in object) {
 830                 if(typeof idx[i] === 'undefined') {
 831                         idx[i] = object[i];
 832                         sorted.push(i);
 833                 }
 834         }
 835
 836         sorted.sort(function(a, b) {
 837                 if(idx[a].priority < idx[b].priority) return -1;
 838                 if(idx[a].priority > idx[b].priority) return 1;
 839                 if(a < b) return -1;
 840                 return 1;
 841         });
 842
 843         return sorted;
 844 }
 845
 846 // ----------------------------------------------------------------------------
 847
 848 function gaugeChart(title, width, dimensions, colors) {
 849         if(typeof colors === 'undefined')
 850                 colors = '';
 851
 852         if(typeof dimensions === 'undefined')
 853                 dimensions = '';
 854
 855         return '<div data-netdata="CHART_UNIQUE_ID"'
 856                                                         + ' data-dimensions="' + dimensions + '"'
 857                                                         + ' data-chart-library="gauge"'
 858                                                         + ' data-gauge-adjust="width"'
 859                                                         + ' data-title="' + title + '"'
 860                                                         + ' data-width="' + width + '"'
 861                                                         + ' data-before="0"'
 862                                                         + ' data-after="-CHART_DURATION"'
 863                                                         + ' data-points="CHART_DURATION"'
 864                                                         + ' data-colors="' + colors + '"'
 865                                                         + ' role="application"></div>';
 866 }
 867
 868 // ----------------------------------------------------------------------------
 869
 870 var menuData = {
 871         'system': {
 872                 title: 'System Overview',
 873                 info: 'Overview of the key system metrics.'
 874         },
 875
 876         'ap': {
 877                 title: 'Access Points',
 878                 info: undefined
 879         },
 880
 881         'tc': {
 882                 title: 'Quality of Service',
 883                 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).'
 884         },
 885
 886         'net': {
 887                 title: 'Network Interfaces',
 888                 info: 'Per network interface statistics collected from <code>/proc/net/dev</code>.'
 889         },
 890
 891         'ipv4': {
 892                 title: 'IPv4 Networking',
 893                 info: undefined
 894         },
 895
 896         'ipv6': {
 897                 title: 'IPv6 Networking',
 898                 info: undefined
 899         },
 900
 901         'ipvs': {
 902                 title: 'IP Virtual Server',
 903                 info: undefined
 904         },
 905
 906         'netfilter': {
 907                 title: 'Firewall (netfilter)',
 908                 info: undefined
 909         },
 910
 911         'cpu': {
 912                 title: 'CPUs',
 913                 info: undefined
 914         },
 915
 916         'mem': {
 917                 title: 'Memory',
 918                 info: undefined
 919         },
 920
 921         'disk': {
 922                 title: 'Disks',
 923                 info: undefined
 924         },
 925
 926         'sensors': {
 927                 title: 'Sensors',
 928                 info: undefined
 929         },
 930
 931         'nfsd': {
 932                 title: 'File Server (nfsd)',
 933                 info: undefined
 934         },
 935
 936         'apps': {
 937                 title: 'Applications',
 938                 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>.',
 939                 height: 1.5
 940         },
 941
 942         'users': {
 943                 title: 'Users',
 944                 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>.',
 945                 height: 1.5
 946         },
 947
 948         'groups': {
 949                 title: 'User Groups',
 950                 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>.',
 951                 height: 1.5
 952         },
 953
 954         'netdata': {
 955                 title: 'Netdata Monitoring',
 956                 info: undefined
 957         },
 958
 959         'example': {
 960                 title: 'Example Charts',
 961                 info: undefined
 962         },
 963 };
 964
 965 var submenuData = {
 966         'mem.ksm': {
 967                 title: 'Memory Deduper',
 968                 info: 'Kernel Same-page Merging (KSM) is the kernel memory de-duper.'
 969         },
 970
 971         'netfilter.conntrack': {
 972                 title: 'Connection Tracker',
 973                 info: 'The following information is taken 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.'
 974         },
 975
 976         'netfilter.nfacct': {
 977                 title: 'Bandwidth Accounting',
 978                 info: 'The following information is read using the <code>nfacct.plugin</code>.'
 979         },
 980
 981         'netfilter.synproxy': {
 982                 title: 'Anti-DDoS Protection',
 983                 info: 'The following information is taken 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.'
 984         }
 985 };
 986
 987 var chartData = {
 988         'system.cpu': {
 989                 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.'
 990         },
 991
 992         'system.load': {
 993                 info: 'Current system load read from <code>/proc/loadavg</code>.',
 994                 height: 0.7
 995         },
 996
 997         'system.io': {
 998                 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.'
 999         },
1000
1001         'system.swapio': {
1002                 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).'
1003         },
1004
1005         'system.pgfaults': {
1006                 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.'
1007         },
1008
1009         'system.entropy': {
1010                 colors: '#CC22AA',
1011                 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.'
1012         },
1013
1014         'system.forks': {
1015                 colors: '#5555DD',
1016                 info: 'The number of new processes created per second, read from <code>/proc/stat</code>.'
1017         },
1018
1019         'system.intr': {
1020                 colors: '#DD5555',
1021                 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.'
1022         },
1023
1024         'system.interrupts': {
1025                 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.'
1026         },
1027
1028         'system.softirqs': {
1029                 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.'
1030         },
1031
1032         'system.processes': {
1033                 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.'
1034         },
1035
1036         'system.active_processes': {
1037                 info: 'All system active processes, read from <code>/proc/loadavg</code>.'
1038         },
1039
1040         'system.ctxt': {
1041                 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.'
1042         },
1043
1044         'system.idlejitter': {
1045                 colors: '#5555AA',
1046                 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).'
1047         },
1048
1049         'system.ipv4': {
1050                 info: 'Total IPv4 Traffic, read from <code>/proc/net/netstat</code>.'
1051         },
1052
1053         'system.ipv6': {
1054                 info: 'Total IPv6 Traffic, read from <code>/proc/net/snmp6</code>.'
1055         },
1056
1057         'system.ram': {
1058                 info: 'System memory, read from <code>/proc/meminfo</code>.'
1059         },
1060
1061         'system.swap': {
1062                 info: 'System swap memory, read from <code>/proc/meminfo</code>.'
1063         },
1064
1065         'mem.ksm_savings': {
1066                 heads: [
1067                         gaugeChart('Saved', '12%', 'savings', '#0099CC')
1068                 ]
1069         },
1070
1071         'mem.ksm_ratios': {
1072                 heads: [
1073                         function(id) {
1074                                 return  '<div data-netdata="' + id + '"'
1075                                         + ' data-gauge-max-value="100"'
1076                                         + ' data-chart-library="gauge"'
1077                                         + ' data-title="Savings"'
1078                                         + ' data-units="percentage %"'
1079                                         + ' data-gauge-adjust="width"'
1080                                         + ' data-width="12%"'
1081                                         + ' data-before="0"'
1082                                         + ' data-after="-CHART_DURATION"'
1083                                         + ' data-points="CHART_DURATION"'
1084                                         + ' role="application"></div>';
1085                         }
1086                 ]
1087         },
1088
1089         'mem.committed': {
1090                 colors: NETDATA.colors[3]
1091         },
1092
1093         'apps.cpu': {
1094                 height: 2.0
1095         },
1096
1097         'apps.preads': {
1098                 height: 2.0
1099         },
1100
1101         'apps.pwrites': {
1102                 height: 2.0
1103         },
1104
1105         'users.cpu': {
1106                 height: 2.0
1107         },
1108
1109         'users.preads': {
1110                 height: 2.0
1111         },
1112
1113         'users.pwrites': {
1114                 height: 2.0
1115         },
1116
1117         'groups.cpu': {
1118                 height: 2.0
1119         },
1120
1121         'groups.preads': {
1122                 height: 2.0
1123         },
1124
1125         'groups.pwrites': {
1126                 height: 2.0
1127         },
1128
1129         'tc.qos': {
1130                 heads: [
1131                         function(id) {
1132                                 if(id.match(/.*-ifb$/))
1133                                         return gaugeChart('Inbound', '12%', '', '#5555AA');
1134                                 else
1135                                         return gaugeChart('Outbound', '12%', '', '#AA9900');
1136                         }
1137                 ]
1138         },
1139
1140         'net.net': {
1141                 heads: [
1142                         gaugeChart('Received', '12%', 'received'),
1143                         gaugeChart('Sent', '12%', 'sent')
1144                 ]
1145         },
1146
1147         'disk.util': {
1148                 colors: '#FF5588',
1149                 heads: [
1150                         gaugeChart('Utilization', '12%', '', '#FF5588')
1151                 ]
1152         },
1153
1154         'disk.backlog': {
1155                 colors: '#0099CC'
1156         },
1157
1158         'disk.io': {
1159                 heads: [
1160                         gaugeChart('Read', '12%', 'reads'),
1161                         gaugeChart('Write', '12%', 'writes')
1162                 ]
1163         },
1164
1165         'netfilter.sockets': {
1166                 colors: '#88AA00',
1167                 heads: [
1168                         gaugeChart('Active Connections', '12%', '', '#88AA00')
1169                 ]
1170         },
1171
1172         'netfilter.new': {
1173                 heads: [
1174                         gaugeChart('New Connections', '12%', 'new', '#5555AA')
1175                 ]
1176         },
1177
1178         'disk.iotime': {
1179                 height: 0.5
1180         },
1181         'disk.mops': {
1182                 height: 0.5
1183         },
1184         'disk.svctm': {
1185                 height: 0.5
1186         },
1187         'disk.avgsz': {
1188                 height: 0.5
1189         },
1190         'disk.await': {
1191                 height: 0.5
1192         },
1193
1194         'apache.connections': {
1195                 colors: NETDATA.colors[4],
1196                 mainheads: [
1197                         gaugeChart('Connections', '12%', '', NETDATA.colors[4])
1198                 ]
1199         },
1200
1201         'apache.requests': {
1202                 colors: NETDATA.colors[0],
1203                 mainheads: [
1204                         gaugeChart('Connections', '12%', '', NETDATA.colors[0])
1205                 ]
1206         },
1207
1208         'apache.net': {
1209                 colors: NETDATA.colors[3],
1210                 mainheads: [
1211                         gaugeChart('Bandwidth', '12%', '', NETDATA.colors[3])
1212                 ]
1213         },
1214
1215         'apache.workers': {
1216                 mainheads: [
1217                         function(id) {
1218                                 return  '<div data-netdata="' + id + '"'
1219                                         + ' data-dimensions="busy"'
1220                                         + ' data-append-options="percentage"'
1221                                         + ' data-gauge-max-value="100"'
1222                                         + ' data-chart-library="gauge"'
1223                                         + ' data-title="Workers Utilization"'
1224                                         + ' data-units="percentage %"'
1225                                         + ' data-gauge-adjust="width"'
1226                                         + ' data-width="12%"'
1227                                         + ' data-before="0"'
1228                                         + ' data-after="-CHART_DURATION"'
1229                                         + ' data-points="CHART_DURATION"'
1230                                         + ' role="application"></div>';
1231                         }
1232                 ]
1233         },
1234
1235         'apache.bytesperreq': {
1236                 colors: NETDATA.colors[3],
1237                 height: 0.5
1238         },
1239
1240         'apache.reqpersec': {
1241                 colors: NETDATA.colors[4],
1242                 height: 0.5
1243         },
1244
1245         'apache.bytespersec': {
1246                 colors: NETDATA.colors[6],
1247                 height: 0.5
1248         },
1249
1250         'nginx.connections': {
1251                 colors: NETDATA.colors[4],
1252                 mainheads: [
1253                         gaugeChart('Connections', '12%', '', NETDATA.colors[4])
1254                 ]
1255         },
1256
1257         'nginx.requests': {
1258                 colors: NETDATA.colors[0],
1259                 mainheads: [
1260                         gaugeChart('Requests', '12%', '', NETDATA.colors[0])
1261                 ]
1262         }
1263 };
1264
1265 function anyAttribute(obj, attr, key, def) {
1266         if(typeof obj[key] !== 'undefined') {
1267                 if(typeof obj[key][attr] !== 'undefined')
1268                         return obj[key][attr];
1269         }
1270         return def;
1271 }
1272
1273 function menuTitle(menu) {
1274         return anyAttribute(menuData, 'title', menu, menu);
1275 }
1276
1277 function menuInfo(menu) {
1278         return anyAttribute(menuData, 'info', menu, null);
1279 }
1280
1281 function menuHeight(menu, relative) {
1282         return anyAttribute(menuData, 'height', menu, 1.0) * relative;
1283 }
1284
1285 function submenuTitle(menu, submenu) {
1286         var key = menu + '.' + submenu;
1287         return anyAttribute(submenuData, 'title', key, submenu);
1288 }
1289
1290 function submenuInfo(menu, submenu) {
1291         var key = menu + '.' + submenu;
1292         return anyAttribute(submenuData, 'info', key, null);
1293 }
1294
1295 function submenuHeight(menu, submenu, relative) {
1296         var key = menu + '.' + submenu;
1297         return anyAttribute(submenuData, 'height', key, 1.0) * relative;
1298 }
1299
1300
1301 function chartInfo(id) {
1302         if(typeof chartData[id] !== 'undefined' && typeof chartData[id].info !== 'undefined')
1303                 return '<div class="chart-message netdata-chart-alignment" role="document">' + chartData[id].info + '</div>';
1304         else
1305                 return '';
1306 }
1307
1308 function chartHeight(id, def) {
1309         if(typeof chartData[id] !== 'undefined' && typeof chartData[id].height !== 'undefined')
1310                 return def * chartData[id].height;
1311         else
1312                 return def;
1313 }
1314
1315
1316 // ----------------------------------------------------------------------------
1317
1318 // enrich the data structure returned by netdata
1319 // to reflect our menu system and content
1320 function enrichChartData(chart) {
1321         var tmp = chart.type.split('_')[0];
1322
1323         switch(tmp) {
1324                 case 'ap':
1325                 case 'net':
1326                 case 'disk':
1327                         chart.menu = tmp;
1328                         break;
1329
1330                 case 'tc':
1331                         chart.menu = tmp;
1332
1333                         // find the interface name from the name
1334                         if(typeof options.submenu_names[chart.family] === 'undefined' || options.submenu_names[chart.family] === chart.family)
1335                                 options.submenu_names[chart.family] = chart.name.split('.')[1].split('_')[0];
1336
1337                         // increase the priority of IFB devices
1338                         if(chart.id.match(/.*-ifb$/))
1339                                 chart.priority--;
1340
1341                         break;
1342
1343                 default:
1344                         chart.menu = chart.type;
1345                         break;
1346         }
1347
1348         chart.submenu = chart.family;
1349 }
1350
1351 // ----------------------------------------------------------------------------
1352
1353 function name2id(s) {
1354         return s
1355                 .replace(' ', '_')
1356                 .replace('(', '_')
1357                 .replace(')', '_')
1358                 .replace('.', '_')
1359                 .replace('/', '_');
1360 }
1361
1362 function headMain(charts, duration) {
1363         var head = '';
1364
1365         if(typeof charts['system.swap'] !== 'undefined')
1366                 head += '<div style="margin-right: 10px;" data-netdata="system.swap"'
1367                 + ' data-dimensions="free"'
1368                 + ' data-append-options="percentage"'
1369                 + ' data-chart-library="easypiechart"'
1370                 + ' data-title="Free Swap"'
1371                 + ' data-units="%"'
1372                 + ' data-easypiechart-max-value="100"'
1373                 + ' data-width="8%"'
1374                 + ' data-before="0"'
1375                 + ' data-after="-' + duration.toString() + '"'
1376                 + ' data-points="' + duration.toString() + '"'
1377                 + ' data-colors="#DD4400"'
1378                 + ' role="application"></div>';
1379
1380         if(typeof charts['system.io'] !== 'undefined') {
1381                 head += '<div style="margin-right: 10px;" data-netdata="system.io"'
1382                 + ' data-dimensions="in"'
1383                 + ' data-chart-library="easypiechart"'
1384                 + ' data-title="Disk Read"'
1385                 + ' data-units="KB / s"'
1386                 + ' data-width="10%"'
1387                 + ' data-before="0"'
1388                 + ' data-after="-' + duration.toString() + '"'
1389                 + ' data-points="' + duration.toString() + '"'
1390                 + ' role="application"></div>';
1391
1392                 head += '<div style="margin-right: 10px;" data-netdata="system.io"'
1393                 + ' data-dimensions="out"'
1394                 + ' data-chart-library="easypiechart"'
1395                 + ' data-title="Disk Write"'
1396                 + ' data-units="KB / s"'
1397                 + ' data-width="10%"'
1398                 + ' data-before="0"'
1399                 + ' data-after="-' + duration.toString() + '"'
1400                 + ' data-points="' + duration.toString() + '"'
1401                 + ' role="application"></div>';
1402         }
1403
1404         if(typeof charts['system.cpu'] !== 'undefined')
1405                 head += '<div data-netdata="system.cpu"'
1406                 + ' data-chart-library="gauge"'
1407                 + ' data-title="CPU"'
1408                 + ' data-units="%"'
1409                 + ' data-gauge-max-value="100"'
1410                 + ' data-width="18%"'
1411                 + ' data-after="-' + duration.toString() + '"'
1412                 + ' data-points="' + duration.toString() + '"'
1413                 + ' data-colors="' + NETDATA.colors[12] + '"'
1414                 + ' role="application"></div>';
1415
1416         if(typeof charts['system.ipv4'] !== 'undefined') {
1417                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv4"'
1418                 + ' data-dimensions="received"'
1419                 + ' data-chart-library="easypiechart"'
1420                 + ' data-title="IPv4 Inbound"'
1421                 + ' data-units="kbps"'
1422                 + ' data-width="10%"'
1423                 + ' data-before="0"'
1424                 + ' data-after="-' + duration.toString() + '"'
1425                 + ' data-points="' + duration.toString() + '"'
1426                 + ' role="application"></div>';
1427
1428                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv4"'
1429                 + ' data-dimensions="sent"'
1430                 + ' data-chart-library="easypiechart"'
1431                 + ' data-title="IPv4 Outbound"'
1432                 + ' data-units="kbps"'
1433                 + ' data-width="10%"'
1434                 + ' data-before="0"'
1435                 + ' data-after="-' + duration.toString() + '"'
1436                 + ' data-points="' + duration.toString() + '"'
1437                 + ' role="application"></div>';
1438         }
1439         else if(typeof charts['system.ipv6'] !== 'undefined') {
1440                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv6"'
1441                 + ' data-dimensions="received"'
1442                 + ' data-chart-library="easypiechart"'
1443                 + ' data-title="IPv6 Inbound"'
1444                 + ' data-units="kbps"'
1445                 + ' data-width="10%"'
1446                 + ' data-before="0"'
1447                 + ' data-after="-' + duration.toString() + '"'
1448                 + ' data-points="' + duration.toString() + '"'
1449                 + ' role="application"></div>';
1450
1451                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv6"'
1452                 + ' data-dimensions="sent"'
1453                 + ' data-chart-library="easypiechart"'
1454                 + ' data-title="IPv6 Outbound"'
1455                 + ' data-units="kbps"'
1456                 + ' data-width="10%"'
1457                 + ' data-before="0"'
1458                 + ' data-after="-' + duration.toString() + '"'
1459                 + ' data-points="' + duration.toString() + '"'
1460                 + ' role="application"></div>';
1461         }
1462
1463         if(typeof charts['system.ram'] !== 'undefined')
1464                 head += '<div style="margin-right: 10px;" data-netdata="system.ram"'
1465                 + ' data-dimensions="cached|free"'
1466                 + ' data-append-options="percentage"'
1467                 + ' data-chart-library="easypiechart"'
1468                 + ' data-title="Available RAM"'
1469                 + ' data-units="%"'
1470                 + ' data-easypiechart-max-value="100"'
1471                 + ' data-width="8%"'
1472                 + ' data-after="-' + duration.toString() + '"'
1473                 + ' data-points="' + duration.toString() + '"'
1474                 + ' data-colors="' + NETDATA.colors[7] + '"'
1475                 + ' role="application"></div>';
1476
1477         return head;
1478 }
1479
1480 function generateHeadCharts(type, chart, duration) {
1481         var head = '';
1482         var hcharts = anyAttribute(chartData, type, chart.context, []);
1483         if(hcharts.length > 0) {
1484                 var hi = 0, hlen = hcharts.length;
1485                 while(hi < hlen) {
1486                         if(typeof hcharts[hi] === 'function')
1487                                 head += hcharts[hi](chart.id).replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
1488                         else
1489                                 head += hcharts[hi].replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
1490                         hi++;
1491                 }
1492         }
1493         return head;
1494 }
1495
1496 function renderPage(menus, data) {
1497         var div = document.getElementById('charts_div');
1498         var pcent_width = Math.floor(100 / chartsPerRow($(div).width()));
1499
1500         // find the proper duration for per-second updates
1501         var duration = Math.round(($(div).width() * pcent_width / 100 * data.update_every / 3) / 60) * 60;
1502         var html = '';
1503         var sidebar = '<ul class="nav dashboard-sidenav" data-spy="affix" id="sidebar_ul">';
1504         var mainhead = headMain(data.charts, duration);
1505
1506         // sort the menus
1507         var main = sortObjectByPriority(menus);
1508         var i = 0, len = main.length;
1509         while(i < len) {
1510                 var menu = main[i++];
1511
1512                 // generate an entry at the main menu
1513
1514                 sidebar += '<li class=""><a href="#' + menu + '">' + menus[menu].title + '</a><ul class="nav">';
1515                 html += '<div role="section"><div role="sectionhead"><h1 id="' + menu + '" role="heading">' + menus[menu].title + '</h1></div><div id="' + menu + '" role="document">';
1516
1517                 if(menus[menu].info !== null)
1518                         html += menus[menu].info;
1519
1520                 // console.log(' >> ' + menu + ' (' + menus[menu].priority + '): ' + menus[menu].title);
1521
1522                 var shtml = '';
1523                 var mhead = '<div style="width: 100%; text-align: center;">' + mainhead;
1524                 mainhead = '';
1525
1526                 // sort the submenus of this menu
1527                 var sub = sortObjectByPriority(menus[menu].submenus);
1528                 var si = 0, slen = sub.length;
1529                 while(si < slen) {
1530                         var submenu = sub[si++];
1531
1532                         // generate an entry at the submenu
1533                         sidebar += '<li class><a href="#' + name2id(menu + '_' + submenu) + '">' + menus[menu].submenus[submenu].title + '</a></li>';
1534                         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>';
1535
1536                         if(menus[menu].submenus[submenu].info !== null)
1537                                 shtml += '<div class="chart-message netdata-chart-alignment" role="document">' + menus[menu].submenus[submenu].info + '</div>';
1538
1539                         var head = '<div style="width: 100%; text-align: center;">';
1540                         var chtml = '';
1541
1542                         // console.log('    \------- ' + submenu + ' (' + menus[menu].submenus[submenu].priority + '): ' + menus[menu].submenus[submenu].title);
1543
1544                         // sort the charts in this submenu of this menu
1545                         menus[menu].submenus[submenu].charts.sort(prioritySort);
1546                         var ci = 0, clen = menus[menu].submenus[submenu].charts.length;
1547                         while(ci < clen) {
1548                                 var chart = menus[menu].submenus[submenu].charts[ci++];
1549
1550                                 // generate the submenu heading charts
1551                                 mhead += generateHeadCharts('mainheads', chart, duration);
1552                                 head += generateHeadCharts('heads', chart, duration);
1553
1554                                 // generate the chart
1555                                 chtml += chartInfo(chart.context) + '<div data-netdata="' + chart.id + '"'
1556                                         + ' data-width="' + pcent_width.toString() + '%"'
1557                                         + ' data-height="' + chartHeight(chart.context, options.chartsHeight).toString() + 'px"'
1558                                         + ' data-before="0"'
1559                                         + ' data-after="-' + duration.toString() + '"'
1560                                         + ' data-id="' + name2id(options.hostname + '/' + chart.id) + '"'
1561                                         + ' data-colors="' + anyAttribute(chartData, 'colors', chart.context, '') + '"'
1562                                         + ' role="application"></div>';
1563
1564                                 // console.log('         \------- ' + chart.id + ' (' + chart.priority + '): ' + chart.context  + ' height: ' + menus[menu].submenus[submenu].height);
1565                         }
1566
1567                         head += '</div>';
1568                         shtml += head + chtml + '</div>';
1569                 }
1570
1571                 mhead += '</div>';
1572                 sidebar += '</ul></li>';
1573                 html += mhead + shtml + '</div></div><hr role="separator"/>';
1574         }
1575
1576         sidebar += '</ul>';
1577         div.innerHTML = html;
1578         document.getElementById('sidebar').innerHTML = sidebar;
1579         finalizePage();
1580 }
1581
1582 function renderChartsAndMenu(data) {
1583         var menus = {};
1584         var charts = data.charts;
1585
1586         for(var c in charts) {
1587                 enrichChartData(charts[c]);
1588
1589                 // create the menu
1590                 if(typeof menus[charts[c].menu] === 'undefined') {
1591                         menus[charts[c].menu] = {
1592                                 priority: charts[c].priority,
1593                                 submenus: {},
1594                                 title: menuTitle(charts[c].menu),
1595                                 info: menuInfo(charts[c].menu),
1596                                 height: menuHeight(charts[c].menu, options.chartsHeight)
1597                         };
1598                 }
1599
1600                 if(charts[c].priority < menus[charts[c].menu].priority)
1601                         menus[charts[c].menu].priority = charts[c].priority;
1602
1603                 // create the submenu
1604                 if(typeof menus[charts[c].menu].submenus[charts[c].submenu] === 'undefined') {
1605                         menus[charts[c].menu].submenus[charts[c].submenu] = {
1606                                 priority: charts[c].priority,
1607                                 charts: new Array(),
1608                                 title: null,
1609                                 info: submenuInfo(charts[c].menu, charts[c].submenu),
1610                                 height: submenuHeight(charts[c].menu, charts[c].submenu, menus[charts[c].menu].height)
1611                         };
1612                 }
1613
1614                 if(charts[c].priority < menus[charts[c].menu].submenus[charts[c].submenu].priority)
1615                         menus[charts[c].menu].submenus[charts[c].submenu].priority = charts[c].priority;
1616
1617                 // index the chart in the menu/submenu
1618                 menus[charts[c].menu].submenus[charts[c].submenu].charts.push(charts[c]);
1619         }
1620
1621         for(var m in menus) {
1622                 for(var s in menus[m].submenus) {
1623                         // set the family using a name
1624                         if(typeof options.submenu_names[s] !== 'undefined') {
1625                                 menus[m].submenus[s].title = s + ' (' + options.submenu_names[s] + ')';
1626                         }
1627                         else {
1628                                 menus[m].submenus[s].title = submenuTitle(m, s);
1629                         }
1630                 }
1631         }
1632
1633         renderPage(menus, data);
1634 }
1635
1636 function downloadAllCharts(netdata_url) {
1637         if(typeof netdata_url === 'undefined' || netdata_url === null)
1638                 netdata_url = NETDATA.serverDefault;
1639
1640         NETDATA.pause(function() {
1641
1642                 // download all the charts the server knows
1643                 NETDATA.chartRegistry.downloadAll(netdata_url, function(data) {
1644
1645                         options.data = data;
1646                         options.hostname = data.hostname;
1647                         document.getElementById('hostname').innerHTML = options.hostname;
1648                         document.getElementById('hostname').href = NETDATA.serverDefault;
1649                         document.title = options.hostname + ' dashboard';
1650
1651                         renderChartsAndMenu(data);
1652
1653                         // prepare our DOM
1654 //                      prepareScreen(data);
1655
1656                         // due to affix issues, prepareScreen() will unpause
1657                         // netdata as needed
1658                 });
1659         });
1660 }
1661
1662 // ----------------------------------------------------------------------------
1663
1664 function versionLog(msg) {
1665         document.getElementById('versionCheckLog').innerHTML = msg;
1666 }
1667
1668 function getNetdataVersion(callback) {
1669         versionLog('Downloading installed version info from netdata...');
1670
1671         $.ajax({
1672                 url: 'version.txt',
1673                 async: true,
1674                 cache: false
1675         })
1676         .done(function(data) {
1677                 data = data.replace(/(\r\n|\n|\r| |\t)/gm,"");
1678                 if(data.length !== 40) {
1679                         versionLog('Received version string is invalid.');
1680                         callback(null);
1681                 }
1682                 else {
1683                         versionLog('Installed version of netdata is ' + data);
1684                         document.getElementById('netdataVersion').innerHTML = data;
1685                         callback(data);
1686                 }
1687         })
1688         .fail(function() {
1689                 versionLog('Failed to download installed version info from netdata!');
1690                 callback(null);
1691         });
1692 }
1693
1694 function getGithubLatestCommit(callback) {
1695         versionLog('Downloading latest version info from github...');
1696
1697         $.ajax({
1698                 url: 'https://api.github.com/repos/firehol/netdata/commits',
1699                 async: true,
1700                 cache: false
1701         })
1702         .done(function(data) {
1703                 versionLog('Latest version info from github is ' + data[0].sha);
1704                 callback(data[0].sha);
1705         })
1706         .fail(function() {
1707                 versionLog('Failed to download installed version info from github!');
1708                 callback(null);
1709         });
1710 }
1711
1712 function checkForUpdate(callback) {
1713         getNetdataVersion(function(sha1) {
1714                 if(sha1 === null) callback(null, null);
1715
1716                 getGithubLatestCommit(function(sha2) {
1717                         callback(sha1, sha2);
1718                 });
1719         });
1720
1721         return null;
1722 }
1723
1724 var updateBlinkCounter = 0;
1725 function notifyForUpdate(force) {
1726         versionLog('<p>checking for updates...</p>');
1727
1728         var now = new Date().getTime();
1729
1730         if(typeof force === 'undefined' || force !== true) {
1731                 var last = loadLocalStorage('last_update_check');
1732
1733                 if(typeof last === 'string')
1734                         last = parseInt(last);
1735                 else
1736                         last = 0;
1737
1738                 if(now - last < 3600000 * 8) {
1739                         // no need to check it - too soon
1740                         return;
1741                 }
1742         }
1743
1744         checkForUpdate(function(sha1, sha2) {
1745                 var save = false;
1746
1747                 if(sha1 === null) {
1748                         save = false;
1749                         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>');
1750                 }
1751                 else if(sha2 === null) {
1752                         save = false;
1753                         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>');
1754                 }
1755                 else if(sha1 === sha2) {
1756                         save = true;
1757                         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>');
1758                 }
1759                 else {
1760                         save = true;
1761                         var compare = 'https://github.com/firehol/netdata/compare/' + sha1.toString() + '...' + sha2.toString();
1762
1763                         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>');
1764
1765                         function updateButtonBlink() {
1766                                 updateBlinkCounter--;
1767                                 if(updateBlinkCounter > 0)
1768                                         $('#updateButton').fadeOut(500).fadeIn(500, updateButtonBlink);
1769                         }
1770
1771                         if(updateBlinkCounter === 0) {
1772                                 updateBlinkCounter = 300;
1773                                 updateButtonBlink();
1774                         }
1775                 }
1776
1777                 if(save)
1778                         saveLocalStorage('last_update_check', now.toString());
1779         });
1780 }
1781
1782 // ----------------------------------------------------------------------------
1783
1784 function finalizePage() {
1785         // resize all charts - without starting the background thread
1786         // this has to be done while NETDATA is paused
1787         // if we ommit this, the affix menu will be wrong, since all
1788         // the Dom elements are initially zero-sized
1789         NETDATA.parseDom();
1790
1791         // let it run (update the charts)
1792         NETDATA.unpause();
1793
1794         // check if we have to jump to a specific section
1795         var hash = location.hash.replace('#','');
1796         if(hash != '') {
1797                 // Clear the hash in the URL
1798                 // location.hash = '';   // delete front "//" if you want to change the address bar
1799                 var offset = $(location.hash).offset();
1800                 if(typeof offset !== 'undefined')
1801                         $('html, body').animate({ scrollTop: offset.top }, 0);
1802         }
1803
1804         /* activate bootstrap sidebar (affix) */
1805         $('#sidebar').affix({
1806                 offset: {
1807                         top: (document.location.hostname === demo_hostname)?150:0,
1808                         bottom: 0
1809                 }
1810         });
1811
1812         /* fix scrolling of very long affix lists
1813            http://stackoverflow.com/questions/21691585/bootstrap-3-1-0-affix-too-long
1814          */
1815         $('#sidebar').on('affixed.bs.affix', function() {
1816                 $(this).removeAttr('style');
1817         });
1818
1819         /* activate bootstrap scrollspy (needed for sidebar) */
1820         $(document.body).scrollspy({
1821                 target: '#sidebar',
1822                 offset: $(window).height() / 3 // controls the diff of the <hX> element to the top, to select it
1823         });
1824
1825         document.getElementById('footer').style.display = 'block';
1826
1827
1828         var update_options_modal = function() {
1829                 // console.log('update_options_modal');
1830
1831                 var sync_option = function(option) {
1832                         var self = $('#' + option);
1833
1834                         if(self.prop('checked') !== NETDATA.getOption(option)) {
1835                                 // console.log('switching ' + option.toString());
1836                                 self.bootstrapToggle(NETDATA.getOption(option)?'on':'off');
1837                         }
1838                 }
1839
1840                 var theme_sync_option = function(option) {
1841                         var self = $('#' + option);
1842
1843                         self.bootstrapToggle(netdataTheme === 'slate'?'on':'off');
1844                 }
1845
1846                 sync_option('eliminate_zero_dimensions');
1847                 sync_option('destroy_on_hide');
1848                 sync_option('parallel_refresher');
1849                 sync_option('concurrent_refreshes');
1850                 sync_option('sync_selection');
1851                 sync_option('sync_pan_and_zoom');
1852                 sync_option('stop_updates_when_focus_is_lost');
1853                 sync_option('smooth_plot');
1854                 sync_option('pan_and_zoom_data_padding');
1855                 theme_sync_option('netdata_theme_control');
1856
1857                 if(NETDATA.getOption('parallel_refresher') === false) {
1858                         $('#concurrent_refreshes_row').hide();
1859                 }
1860                 else {
1861                         $('#concurrent_refreshes_row').show();
1862                 }
1863         };
1864         NETDATA.setOption('setOptionCallback', update_options_modal);
1865
1866         // handle options changes
1867         $('#eliminate_zero_dimensions').change(function()       { NETDATA.setOption('eliminate_zero_dimensions', $(this).prop('checked')); });
1868         $('#destroy_on_hide').change(function()                 { NETDATA.setOption('destroy_on_hide', $(this).prop('checked')); });
1869         $('#parallel_refresher').change(function()              { NETDATA.setOption('parallel_refresher', $(this).prop('checked')); });
1870         $('#concurrent_refreshes').change(function()            { NETDATA.setOption('concurrent_refreshes', $(this).prop('checked')); });
1871         $('#sync_selection').change(function()                  { NETDATA.setOption('sync_selection', $(this).prop('checked')); });
1872         $('#sync_pan_and_zoom').change(function()               { NETDATA.setOption('sync_pan_and_zoom', $(this).prop('checked')); });
1873         $('#stop_updates_when_focus_is_lost').change(function() { NETDATA.setOption('stop_updates_when_focus_is_lost', $(this).prop('checked')); });
1874         $('#smooth_plot').change(function()                     { NETDATA.setOption('smooth_plot', $(this).prop('checked')); });
1875         $('#pan_and_zoom_data_padding').change(function()       { NETDATA.setOption('pan_and_zoom_data_padding', $(this).prop('checked')); });
1876
1877         // this has to be the last
1878         // it reloads the page
1879         $('#netdata_theme_control').change(function() {
1880                 if(setTheme($(this).prop('checked')?'slate':'default'))
1881                         location.reload();
1882         });
1883
1884         if(document.location.hostname === demo_hostname) {
1885                 setTimeout(function() {
1886                         $('#welcomeModal').modal();
1887                 }, 1000);
1888         }
1889         else
1890                 notifyForUpdate();
1891
1892         $('#updateModal').on('shown.bs.modal', function() {
1893                 notifyForUpdate(true);
1894         })
1895 }
1896
1897 function resetDashboardOptions() {
1898         NETDATA.resetOptions();
1899         if(setTheme('slate'))
1900                 location.reload();
1901 }
1902
1903 downloadAllCharts();
1904
1905 </script>
1906
1907 </body>
1908 </html>