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
 972 var chartData = {
 973         'system.cpu': {
 974                 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.'
 975         },
 976
 977         'system.load': {
 978                 info: 'Current system load read from <code>/proc/loadavg</code>.',
 979                 height: 0.7
 980         },
 981
 982         'system.io': {
 983                 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.'
 984         },
 985
 986         'system.swapio': {
 987                 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).'
 988         },
 989
 990         'system.pgfaults': {
 991                 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.'
 992         },
 993
 994         'system.entropy': {
 995                 colors: '#CC22AA',
 996                 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.'
 997         },
 998
 999         'system.forks': {
1000                 colors: '#5555DD',
1001                 info: 'The number of new processes created per second, read from <code>/proc/stat</code>.'
1002         },
1003
1004         'system.intr': {
1005                 colors: '#DD5555',
1006                 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.'
1007         },
1008
1009         'system.interrupts': {
1010                 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.'
1011         },
1012
1013         'system.softirqs': {
1014                 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.'
1015         },
1016
1017         'system.processes': {
1018                 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.'
1019         },
1020
1021         'system.active_processes': {
1022                 info: 'All system active processes, read from <code>/proc/loadavg</code>.'
1023         },
1024
1025         'system.ctxt': {
1026                 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.'
1027         },
1028
1029         'system.idlejitter': {
1030                 colors: '#5555AA',
1031                 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).'
1032         },
1033
1034         'system.ipv4': {
1035                 info: 'Total IPv4 Traffic, read from <code>/proc/net/netstat</code>.'
1036         },
1037
1038         'system.ipv6': {
1039                 info: 'Total IPv6 Traffic, read from <code>/proc/net/snmp6</code>.'
1040         },
1041
1042         'system.ram': {
1043                 info: 'System memory, read from <code>/proc/meminfo</code>.'
1044         },
1045
1046         'system.swap': {
1047                 info: 'System swap memory, read from <code>/proc/meminfo</code>.'
1048         },
1049
1050         'mem.ksm_savings': {
1051                 heads: [
1052                         gaugeChart('Saved', '12%', 'savings', '#0099CC')
1053                 ]
1054         },
1055
1056         'mem.ksm_ratios': {
1057                 heads: [
1058                         function(id) {
1059                                 return  '<div data-netdata="' + id + '"'
1060                                         + ' data-gauge-max-value="100"'
1061                                         + ' data-chart-library="gauge"'
1062                                         + ' data-title="Savings"'
1063                                         + ' data-units="percentage %"'
1064                                         + ' data-gauge-adjust="width"'
1065                                         + ' data-width="12%"'
1066                                         + ' data-before="0"'
1067                                         + ' data-after="-CHART_DURATION"'
1068                                         + ' data-points="CHART_DURATION"'
1069                                         + ' role="application"></div>';
1070                         }
1071                 ]
1072         },
1073
1074         'mem.committed': {
1075                 colors: NETDATA.colors[3]
1076         },
1077
1078         'apps.cpu': {
1079                 height: 2.0
1080         },
1081
1082         'apps.preads': {
1083                 height: 2.0
1084         },
1085
1086         'apps.pwrites': {
1087                 height: 2.0
1088         },
1089
1090         'users.cpu': {
1091                 height: 2.0
1092         },
1093
1094         'users.preads': {
1095                 height: 2.0
1096         },
1097
1098         'users.pwrites': {
1099                 height: 2.0
1100         },
1101
1102         'groups.cpu': {
1103                 height: 2.0
1104         },
1105
1106         'groups.preads': {
1107                 height: 2.0
1108         },
1109
1110         'groups.pwrites': {
1111                 height: 2.0
1112         },
1113
1114         'tc.qos': {
1115                 heads: [
1116                         function(id) {
1117                                 if(id.match(/.*-ifb$/))
1118                                         return gaugeChart('Inbound', '12%', '', '#5555AA');
1119                                 else
1120                                         return gaugeChart('Outbound', '12%', '', '#AA9900');
1121                         }
1122                 ]
1123         },
1124
1125         'net.net': {
1126                 heads: [
1127                         gaugeChart('Received', '12%', 'received'),
1128                         gaugeChart('Sent', '12%', 'sent')
1129                 ]
1130         },
1131
1132         'disk.util': {
1133                 colors: '#FF5588',
1134                 heads: [
1135                         gaugeChart('Utilization', '12%', '', '#FF5588')
1136                 ]
1137         },
1138
1139         'disk.backlog': {
1140                 colors: '#0099CC'
1141         },
1142
1143         'disk.io': {
1144                 heads: [
1145                         gaugeChart('Read', '12%', 'reads'),
1146                         gaugeChart('Write', '12%', 'writes')
1147                 ]
1148         },
1149
1150         'netfilter.sockets': {
1151                 colors: '#88AA00',
1152                 heads: [
1153                         gaugeChart('Active Connections', '12%', '', '#88AA00')
1154                 ]
1155         },
1156
1157         'netfilter.new': {
1158                 heads: [
1159                         gaugeChart('New Connections', '12%', 'new', '#5555AA')
1160                 ]
1161         },
1162
1163         'disk.iotime': {
1164                 height: 0.5
1165         },
1166         'disk.mops': {
1167                 height: 0.5
1168         },
1169         'disk.svctm': {
1170                 height: 0.5
1171         },
1172         'disk.avgsz': {
1173                 height: 0.5
1174         },
1175         'disk.await': {
1176                 height: 0.5
1177         },
1178
1179         'apache.connections': {
1180                 colors: NETDATA.colors[4],
1181                 mainheads: [
1182                         gaugeChart('Connections', '12%', '', NETDATA.colors[4])
1183                 ]
1184         },
1185
1186         'apache.requests': {
1187                 colors: NETDATA.colors[0],
1188                 mainheads: [
1189                         gaugeChart('Connections', '12%', '', NETDATA.colors[0])
1190                 ]
1191         },
1192
1193         'apache.net': {
1194                 colors: NETDATA.colors[3],
1195                 mainheads: [
1196                         gaugeChart('Bandwidth', '12%', '', NETDATA.colors[3])
1197                 ]
1198         },
1199
1200         'apache.workers': {
1201                 mainheads: [
1202                         function(id) {
1203                                 return  '<div data-netdata="' + id + '"'
1204                                         + ' data-dimensions="busy"'
1205                                         + ' data-append-options="percentage"'
1206                                         + ' data-gauge-max-value="100"'
1207                                         + ' data-chart-library="gauge"'
1208                                         + ' data-title="Workers Utilization"'
1209                                         + ' data-units="percentage %"'
1210                                         + ' data-gauge-adjust="width"'
1211                                         + ' data-width="12%"'
1212                                         + ' data-before="0"'
1213                                         + ' data-after="-CHART_DURATION"'
1214                                         + ' data-points="CHART_DURATION"'
1215                                         + ' role="application"></div>';
1216                         }
1217                 ]
1218         },
1219
1220         'apache.bytesperreq': {
1221                 colors: NETDATA.colors[3],
1222                 height: 0.5
1223         },
1224
1225         'apache.reqpersec': {
1226                 colors: NETDATA.colors[4],
1227                 height: 0.5
1228         },
1229
1230         'apache.bytespersec': {
1231                 colors: NETDATA.colors[6],
1232                 height: 0.5
1233         },
1234
1235         'nginx.connections': {
1236                 colors: NETDATA.colors[4],
1237                 mainheads: [
1238                         gaugeChart('Connections', '12%', '', NETDATA.colors[4])
1239                 ]
1240         },
1241
1242         'nginx.requests': {
1243                 colors: NETDATA.colors[0],
1244                 mainheads: [
1245                         gaugeChart('Requests', '12%', '', NETDATA.colors[0])
1246                 ]
1247         }
1248 };
1249
1250 function anyAttribute(obj, attr, key, def) {
1251         if(typeof obj[key] !== 'undefined') {
1252                 if(typeof obj[key][attr] !== 'undefined')
1253                         return obj[key][attr];
1254         }
1255         return def;
1256 }
1257
1258 function menuTitle(menu) {
1259         return anyAttribute(menuData, 'title', menu, menu);
1260 }
1261
1262 function menuInfo(menu) {
1263         return anyAttribute(menuData, 'info', menu, null);
1264 }
1265
1266 function menuHeight(menu, relative) {
1267         return anyAttribute(menuData, 'height', menu, 1.0) * relative;
1268 }
1269
1270 function submenuTitle(menu, submenu) {
1271         var key = menu + '.' + submenu;
1272         return anyAttribute(submenuData, 'title', key, submenu);
1273 }
1274
1275 function submenuInfo(menu, submenu) {
1276         var key = menu + '.' + submenu;
1277         return anyAttribute(submenuData, 'info', key, null);
1278 }
1279
1280 function submenuHeight(menu, submenu, relative) {
1281         var key = menu + '.' + submenu;
1282         return anyAttribute(submenuData, 'height', key, 1.0) * relative;
1283 }
1284
1285
1286 function chartInfo(id) {
1287         if(typeof chartData[id] !== 'undefined' && typeof chartData[id].info !== 'undefined')
1288                 return '<div class="chart-message netdata-chart-alignment" role="document">' + chartData[id].info + '</div>';
1289         else
1290                 return '';
1291 }
1292
1293 function chartHeight(id, def) {
1294         if(typeof chartData[id] !== 'undefined' && typeof chartData[id].height !== 'undefined')
1295                 return def * chartData[id].height;
1296         else
1297                 return def;
1298 }
1299
1300
1301 // ----------------------------------------------------------------------------
1302
1303 // enrich the data structure returned by netdata
1304 // to reflect our menu system and content
1305 function enrichChartData(chart) {
1306         var tmp = chart.type.split('_')[0];
1307
1308         switch(tmp) {
1309                 case 'ap':
1310                 case 'net':
1311                 case 'disk':
1312                         chart.menu = tmp;
1313                         break;
1314
1315                 case 'tc':
1316                         chart.menu = tmp;
1317
1318                         // find the interface name from the name
1319                         if(typeof options.submenu_names[chart.family] === 'undefined' || options.submenu_names[chart.family] === chart.family)
1320                                 options.submenu_names[chart.family] = chart.name.split('.')[1].split('_')[0];
1321
1322                         // increase the priority of IFB devices
1323                         if(chart.id.match(/.*-ifb$/))
1324                                 chart.priority--;
1325
1326                         break;
1327
1328                 default:
1329                         chart.menu = chart.type;
1330                         break;
1331         }
1332
1333         chart.submenu = chart.family;
1334 }
1335
1336 // ----------------------------------------------------------------------------
1337
1338 function name2id(s) {
1339         return s
1340                 .replace(' ', '_')
1341                 .replace('(', '_')
1342                 .replace(')', '_')
1343                 .replace('.', '_')
1344                 .replace('/', '_');
1345 }
1346
1347 function headMain(charts, duration) {
1348         var head = '';
1349
1350         if(typeof charts['system.swap'] !== 'undefined')
1351                 head += '<div style="margin-right: 10px;" data-netdata="system.swap"'
1352                 + ' data-dimensions="free"'
1353                 + ' data-append-options="percentage"'
1354                 + ' data-chart-library="easypiechart"'
1355                 + ' data-title="Free Swap"'
1356                 + ' data-units="%"'
1357                 + ' data-easypiechart-max-value="100"'
1358                 + ' data-width="8%"'
1359                 + ' data-before="0"'
1360                 + ' data-after="-' + duration.toString() + '"'
1361                 + ' data-points="' + duration.toString() + '"'
1362                 + ' data-colors="#DD4400"'
1363                 + ' role="application"></div>';
1364
1365         if(typeof charts['system.io'] !== 'undefined') {
1366                 head += '<div style="margin-right: 10px;" data-netdata="system.io"'
1367                 + ' data-dimensions="in"'
1368                 + ' data-chart-library="easypiechart"'
1369                 + ' data-title="Disk Read"'
1370                 + ' data-units="KB / s"'
1371                 + ' data-width="10%"'
1372                 + ' data-before="0"'
1373                 + ' data-after="-' + duration.toString() + '"'
1374                 + ' data-points="' + duration.toString() + '"'
1375                 + ' role="application"></div>';
1376
1377                 head += '<div style="margin-right: 10px;" data-netdata="system.io"'
1378                 + ' data-dimensions="out"'
1379                 + ' data-chart-library="easypiechart"'
1380                 + ' data-title="Disk Write"'
1381                 + ' data-units="KB / s"'
1382                 + ' data-width="10%"'
1383                 + ' data-before="0"'
1384                 + ' data-after="-' + duration.toString() + '"'
1385                 + ' data-points="' + duration.toString() + '"'
1386                 + ' role="application"></div>';
1387         }
1388
1389         if(typeof charts['system.cpu'] !== 'undefined')
1390                 head += '<div data-netdata="system.cpu"'
1391                 + ' data-chart-library="gauge"'
1392                 + ' data-title="CPU"'
1393                 + ' data-units="%"'
1394                 + ' data-gauge-max-value="100"'
1395                 + ' data-width="18%"'
1396                 + ' data-after="-' + duration.toString() + '"'
1397                 + ' data-points="' + duration.toString() + '"'
1398                 + ' data-colors="' + NETDATA.colors[12] + '"'
1399                 + ' role="application"></div>';
1400
1401         if(typeof charts['system.ipv4'] !== 'undefined') {
1402                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv4"'
1403                 + ' data-dimensions="received"'
1404                 + ' data-chart-library="easypiechart"'
1405                 + ' data-title="IPv4 Inbound"'
1406                 + ' data-units="kbps"'
1407                 + ' data-width="10%"'
1408                 + ' data-before="0"'
1409                 + ' data-after="-' + duration.toString() + '"'
1410                 + ' data-points="' + duration.toString() + '"'
1411                 + ' role="application"></div>';
1412
1413                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv4"'
1414                 + ' data-dimensions="sent"'
1415                 + ' data-chart-library="easypiechart"'
1416                 + ' data-title="IPv4 Outbound"'
1417                 + ' data-units="kbps"'
1418                 + ' data-width="10%"'
1419                 + ' data-before="0"'
1420                 + ' data-after="-' + duration.toString() + '"'
1421                 + ' data-points="' + duration.toString() + '"'
1422                 + ' role="application"></div>';
1423         }
1424         else if(typeof charts['system.ipv6'] !== 'undefined') {
1425                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv6"'
1426                 + ' data-dimensions="received"'
1427                 + ' data-chart-library="easypiechart"'
1428                 + ' data-title="IPv6 Inbound"'
1429                 + ' data-units="kbps"'
1430                 + ' data-width="10%"'
1431                 + ' data-before="0"'
1432                 + ' data-after="-' + duration.toString() + '"'
1433                 + ' data-points="' + duration.toString() + '"'
1434                 + ' role="application"></div>';
1435
1436                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv6"'
1437                 + ' data-dimensions="sent"'
1438                 + ' data-chart-library="easypiechart"'
1439                 + ' data-title="IPv6 Outbound"'
1440                 + ' data-units="kbps"'
1441                 + ' data-width="10%"'
1442                 + ' data-before="0"'
1443                 + ' data-after="-' + duration.toString() + '"'
1444                 + ' data-points="' + duration.toString() + '"'
1445                 + ' role="application"></div>';
1446         }
1447
1448         if(typeof charts['system.ram'] !== 'undefined')
1449                 head += '<div style="margin-right: 10px;" data-netdata="system.ram"'
1450                 + ' data-dimensions="cached|free"'
1451                 + ' data-append-options="percentage"'
1452                 + ' data-chart-library="easypiechart"'
1453                 + ' data-title="Available RAM"'
1454                 + ' data-units="%"'
1455                 + ' data-easypiechart-max-value="100"'
1456                 + ' data-width="8%"'
1457                 + ' data-after="-' + duration.toString() + '"'
1458                 + ' data-points="' + duration.toString() + '"'
1459                 + ' data-colors="' + NETDATA.colors[7] + '"'
1460                 + ' role="application"></div>';
1461
1462         return head;
1463 }
1464
1465 function generateHeadCharts(type, chart, duration) {
1466         var head = '';
1467         var hcharts = anyAttribute(chartData, type, chart.context, []);
1468         if(hcharts.length > 0) {
1469                 var hi = 0, hlen = hcharts.length;
1470                 while(hi < hlen) {
1471                         if(typeof hcharts[hi] === 'function')
1472                                 head += hcharts[hi](chart.id).replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
1473                         else
1474                                 head += hcharts[hi].replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
1475                         hi++;
1476                 }
1477         }
1478         return head;
1479 }
1480
1481 function renderPage(menus, data) {
1482         var div = document.getElementById('charts_div');
1483         var pcent_width = Math.floor(100 / chartsPerRow($(div).width()));
1484
1485         // find the proper duration for per-second updates
1486         var duration = Math.round(($(div).width() * pcent_width / 100 * data.update_every / 3) / 60) * 60;
1487         var html = '';
1488         var sidebar = '<ul class="nav dashboard-sidenav" data-spy="affix" id="sidebar_ul">';
1489         var mainhead = headMain(data.charts, duration);
1490
1491         // sort the menus
1492         var main = sortObjectByPriority(menus);
1493         var i = 0, len = main.length;
1494         while(i < len) {
1495                 var menu = main[i++];
1496
1497                 // generate an entry at the main menu
1498
1499                 sidebar += '<li class=""><a href="#' + menu + '">' + menus[menu].title + '</a><ul class="nav">';
1500                 html += '<div role="section"><div role="sectionhead"><h1 id="' + menu + '" role="heading">' + menus[menu].title + '</h1></div><div id="' + menu + '" role="document">';
1501
1502                 if(menus[menu].info !== null)
1503                         html += menus[menu].info;
1504
1505                 // console.log(' >> ' + menu + ' (' + menus[menu].priority + '): ' + menus[menu].title);
1506
1507                 var shtml = '';
1508                 var mhead = '<div style="width: 100%; text-align: center;">' + mainhead;
1509                 mainhead = '';
1510
1511                 // sort the submenus of this menu
1512                 var sub = sortObjectByPriority(menus[menu].submenus);
1513                 var si = 0, slen = sub.length;
1514                 while(si < slen) {
1515                         var submenu = sub[si++];
1516
1517                         // generate an entry at the submenu
1518                         sidebar += '<li class><a href="#' + name2id(menu + '_' + submenu) + '">' + menus[menu].submenus[submenu].title + '</a></li>';
1519                         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>';
1520
1521                         if(menus[menu].submenus[submenu].info !== null)
1522                                 shtml += '<div class="chart-message netdata-chart-alignment" role="document">' + menus[menu].submenus[submenu].info + '</div>';
1523
1524                         var head = '<div style="width: 100%; text-align: center;">';
1525                         var chtml = '';
1526
1527                         // console.log('    \------- ' + submenu + ' (' + menus[menu].submenus[submenu].priority + '): ' + menus[menu].submenus[submenu].title);
1528
1529                         // sort the charts in this submenu of this menu
1530                         menus[menu].submenus[submenu].charts.sort(prioritySort);
1531                         var ci = 0, clen = menus[menu].submenus[submenu].charts.length;
1532                         while(ci < clen) {
1533                                 var chart = menus[menu].submenus[submenu].charts[ci++];
1534
1535                                 // generate the submenu heading charts
1536                                 mhead += generateHeadCharts('mainheads', chart, duration);
1537                                 head += generateHeadCharts('heads', chart, duration);
1538
1539                                 // generate the chart
1540                                 chtml += chartInfo(chart.context) + '<div data-netdata="' + chart.id + '"'
1541                                         + ' data-width="' + pcent_width.toString() + '%"'
1542                                         + ' data-height="' + chartHeight(chart.context, options.chartsHeight).toString() + 'px"'
1543                                         + ' data-before="0"'
1544                                         + ' data-after="-' + duration.toString() + '"'
1545                                         + ' data-id="' + name2id(options.hostname + '/' + chart.id) + '"'
1546                                         + ' data-colors="' + anyAttribute(chartData, 'colors', chart.context, '') + '"'
1547                                         + ' role="application"></div>';
1548
1549                                 // console.log('         \------- ' + chart.id + ' (' + chart.priority + '): ' + chart.context  + ' height: ' + menus[menu].submenus[submenu].height);
1550                         }
1551
1552                         head += '</div>';
1553                         shtml += head + chtml + '</div>';
1554                 }
1555
1556                 mhead += '</div>';
1557                 sidebar += '</ul></li>';
1558                 html += mhead + shtml + '</div></div><hr role="separator"/>';
1559         }
1560
1561         sidebar += '</ul>';
1562         div.innerHTML = html;
1563         document.getElementById('sidebar').innerHTML = sidebar;
1564         finalizePage();
1565 }
1566
1567 function renderChartsAndMenu(data) {
1568         var menus = {};
1569         var charts = data.charts;
1570
1571         for(var c in charts) {
1572                 enrichChartData(charts[c]);
1573
1574                 // create the menu
1575                 if(typeof menus[charts[c].menu] === 'undefined') {
1576                         menus[charts[c].menu] = {
1577                                 priority: charts[c].priority,
1578                                 submenus: {},
1579                                 title: menuTitle(charts[c].menu),
1580                                 info: menuInfo(charts[c].menu),
1581                                 height: menuHeight(charts[c].menu, options.chartsHeight)
1582                         };
1583                 }
1584
1585                 if(charts[c].priority < menus[charts[c].menu].priority)
1586                         menus[charts[c].menu].priority = charts[c].priority;
1587
1588                 // create the submenu
1589                 if(typeof menus[charts[c].menu].submenus[charts[c].submenu] === 'undefined') {
1590                         menus[charts[c].menu].submenus[charts[c].submenu] = {
1591                                 priority: charts[c].priority,
1592                                 charts: new Array(),
1593                                 title: null,
1594                                 info: submenuInfo(charts[c].menu, charts[c].submenu),
1595                                 height: submenuHeight(charts[c].menu, charts[c].submenu, menus[charts[c].menu].height)
1596                         };
1597                 }
1598
1599                 if(charts[c].priority < menus[charts[c].menu].submenus[charts[c].submenu].priority)
1600                         menus[charts[c].menu].submenus[charts[c].submenu].priority = charts[c].priority;
1601
1602                 // index the chart in the menu/submenu
1603                 menus[charts[c].menu].submenus[charts[c].submenu].charts.push(charts[c]);
1604         }
1605
1606         for(var m in menus) {
1607                 for(var s in menus[m].submenus) {
1608                         // set the family using a name
1609                         if(typeof options.submenu_names[s] !== 'undefined') {
1610                                 menus[m].submenus[s].title = s + ' (' + options.submenu_names[s] + ')';
1611                         }
1612                         else {
1613                                 menus[m].submenus[s].title = submenuTitle(m, s);
1614                         }
1615                 }
1616         }
1617
1618         renderPage(menus, data);
1619 }
1620
1621 function downloadAllCharts(netdata_url) {
1622         if(typeof netdata_url === 'undefined' || netdata_url === null)
1623                 netdata_url = NETDATA.serverDefault;
1624
1625         NETDATA.pause(function() {
1626
1627                 // download all the charts the server knows
1628                 NETDATA.chartRegistry.downloadAll(netdata_url, function(data) {
1629
1630                         options.data = data;
1631                         options.hostname = data.hostname;
1632                         document.getElementById('hostname').innerHTML = options.hostname;
1633                         document.getElementById('hostname').href = NETDATA.serverDefault;
1634                         document.title = options.hostname + ' dashboard';
1635
1636                         renderChartsAndMenu(data);
1637
1638                         // prepare our DOM
1639 //                      prepareScreen(data);
1640
1641                         // due to affix issues, prepareScreen() will unpause
1642                         // netdata as needed
1643                 });
1644         });
1645 }
1646
1647 // ----------------------------------------------------------------------------
1648
1649 function versionLog(msg) {
1650         document.getElementById('versionCheckLog').innerHTML = msg;
1651 }
1652
1653 function getNetdataVersion(callback) {
1654         versionLog('Downloading installed version info from netdata...');
1655
1656         $.ajax({
1657                 url: 'version.txt',
1658                 async: true,
1659                 cache: false
1660         })
1661         .done(function(data) {
1662                 data = data.replace(/(\r\n|\n|\r| |\t)/gm,"");
1663                 if(data.length !== 40) {
1664                         versionLog('Received version string is invalid.');
1665                         callback(null);
1666                 }
1667                 else {
1668                         versionLog('Installed version of netdata is ' + data);
1669                         document.getElementById('netdataVersion').innerHTML = data;
1670                         callback(data);
1671                 }
1672         })
1673         .fail(function() {
1674                 versionLog('Failed to download installed version info from netdata!');
1675                 callback(null);
1676         });
1677 }
1678
1679 function getGithubLatestCommit(callback) {
1680         versionLog('Downloading latest version info from github...');
1681
1682         $.ajax({
1683                 url: 'https://api.github.com/repos/firehol/netdata/commits',
1684                 async: true,
1685                 cache: false
1686         })
1687         .done(function(data) {
1688                 versionLog('Latest version info from github is ' + data[0].sha);
1689                 callback(data[0].sha);
1690         })
1691         .fail(function() {
1692                 versionLog('Failed to download installed version info from github!');
1693                 callback(null);
1694         });
1695 }
1696
1697 function checkForUpdate(callback) {
1698         getNetdataVersion(function(sha1) {
1699                 if(sha1 === null) callback(null, null);
1700
1701                 getGithubLatestCommit(function(sha2) {
1702                         callback(sha1, sha2);
1703                 });
1704         });
1705
1706         return null;
1707 }
1708
1709 var updateBlinkCounter = 0;
1710 function notifyForUpdate(force) {
1711         versionLog('<p>checking for updates...</p>');
1712
1713         var now = new Date().getTime();
1714
1715         if(typeof force === 'undefined' || force !== true) {
1716                 var last = loadLocalStorage('last_update_check');
1717
1718                 if(typeof last === 'string')
1719                         last = parseInt(last);
1720                 else
1721                         last = 0;
1722
1723                 if(now - last < 3600000 * 8) {
1724                         // no need to check it - too soon
1725                         return;
1726                 }
1727         }
1728
1729         checkForUpdate(function(sha1, sha2) {
1730                 var save = false;
1731
1732                 if(sha1 === null) {
1733                         save = false;
1734                         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>');
1735                 }
1736                 else if(sha2 === null) {
1737                         save = false;
1738                         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>');
1739                 }
1740                 else if(sha1 === sha2) {
1741                         save = true;
1742                         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>');
1743                 }
1744                 else {
1745                         save = true;
1746                         var compare = 'https://github.com/firehol/netdata/compare/' + sha1.toString() + '...' + sha2.toString();
1747
1748                         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>');
1749
1750                         function updateButtonBlink() {
1751                                 updateBlinkCounter--;
1752                                 if(updateBlinkCounter > 0)
1753                                         $('#updateButton').fadeOut(500).fadeIn(500, updateButtonBlink);
1754                         }
1755
1756                         if(updateBlinkCounter === 0) {
1757                                 updateBlinkCounter = 300;
1758                                 updateButtonBlink();
1759                         }
1760                 }
1761
1762                 if(save)
1763                         saveLocalStorage('last_update_check', now.toString());
1764         });
1765 }
1766
1767 // ----------------------------------------------------------------------------
1768
1769 function finalizePage() {
1770         // resize all charts - without starting the background thread
1771         // this has to be done while NETDATA is paused
1772         // if we ommit this, the affix menu will be wrong, since all
1773         // the Dom elements are initially zero-sized
1774         NETDATA.parseDom();
1775
1776         // let it run (update the charts)
1777         NETDATA.unpause();
1778
1779         // check if we have to jump to a specific section
1780         var hash = location.hash.replace('#','');
1781         if(hash != '') {
1782                 // Clear the hash in the URL
1783                 // location.hash = '';   // delete front "//" if you want to change the address bar
1784                 var offset = $(location.hash).offset();
1785                 if(typeof offset !== 'undefined')
1786                         $('html, body').animate({ scrollTop: offset.top }, 0);
1787         }
1788
1789         /* activate bootstrap sidebar (affix) */
1790         $('#sidebar').affix({
1791                 offset: {
1792                         top: (document.location.hostname === demo_hostname)?150:0,
1793                         bottom: 0
1794                 }
1795         });
1796
1797         /* fix scrolling of very long affix lists
1798            http://stackoverflow.com/questions/21691585/bootstrap-3-1-0-affix-too-long
1799          */
1800         $('#sidebar').on('affixed.bs.affix', function() {
1801                 $(this).removeAttr('style');
1802         });
1803
1804         /* activate bootstrap scrollspy (needed for sidebar) */
1805         $(document.body).scrollspy({
1806                 target: '#sidebar',
1807                 offset: $(window).height() / 3 // controls the diff of the <hX> element to the top, to select it
1808         });
1809
1810         document.getElementById('footer').style.display = 'block';
1811
1812
1813         var update_options_modal = function() {
1814                 // console.log('update_options_modal');
1815
1816                 var sync_option = function(option) {
1817                         var self = $('#' + option);
1818
1819                         if(self.prop('checked') !== NETDATA.getOption(option)) {
1820                                 // console.log('switching ' + option.toString());
1821                                 self.bootstrapToggle(NETDATA.getOption(option)?'on':'off');
1822                         }
1823                 }
1824
1825                 var theme_sync_option = function(option) {
1826                         var self = $('#' + option);
1827
1828                         self.bootstrapToggle(netdataTheme === 'slate'?'on':'off');
1829                 }
1830
1831                 sync_option('eliminate_zero_dimensions');
1832                 sync_option('destroy_on_hide');
1833                 sync_option('parallel_refresher');
1834                 sync_option('concurrent_refreshes');
1835                 sync_option('sync_selection');
1836                 sync_option('sync_pan_and_zoom');
1837                 sync_option('stop_updates_when_focus_is_lost');
1838                 sync_option('smooth_plot');
1839                 sync_option('pan_and_zoom_data_padding');
1840                 theme_sync_option('netdata_theme_control');
1841
1842                 if(NETDATA.getOption('parallel_refresher') === false) {
1843                         $('#concurrent_refreshes_row').hide();
1844                 }
1845                 else {
1846                         $('#concurrent_refreshes_row').show();
1847                 }
1848         };
1849         NETDATA.setOption('setOptionCallback', update_options_modal);
1850
1851         // handle options changes
1852         $('#eliminate_zero_dimensions').change(function()       { NETDATA.setOption('eliminate_zero_dimensions', $(this).prop('checked')); });
1853         $('#destroy_on_hide').change(function()                 { NETDATA.setOption('destroy_on_hide', $(this).prop('checked')); });
1854         $('#parallel_refresher').change(function()              { NETDATA.setOption('parallel_refresher', $(this).prop('checked')); });
1855         $('#concurrent_refreshes').change(function()            { NETDATA.setOption('concurrent_refreshes', $(this).prop('checked')); });
1856         $('#sync_selection').change(function()                  { NETDATA.setOption('sync_selection', $(this).prop('checked')); });
1857         $('#sync_pan_and_zoom').change(function()               { NETDATA.setOption('sync_pan_and_zoom', $(this).prop('checked')); });
1858         $('#stop_updates_when_focus_is_lost').change(function() { NETDATA.setOption('stop_updates_when_focus_is_lost', $(this).prop('checked')); });
1859         $('#smooth_plot').change(function()                     { NETDATA.setOption('smooth_plot', $(this).prop('checked')); });
1860         $('#pan_and_zoom_data_padding').change(function()       { NETDATA.setOption('pan_and_zoom_data_padding', $(this).prop('checked')); });
1861
1862         // this has to be the last
1863         // it reloads the page
1864         $('#netdata_theme_control').change(function() {
1865                 if(setTheme($(this).prop('checked')?'slate':'default'))
1866                         location.reload();
1867         });
1868
1869         if(document.location.hostname === demo_hostname) {
1870                 setTimeout(function() {
1871                         $('#welcomeModal').modal();
1872                 }, 1000);
1873         }
1874         else
1875                 notifyForUpdate();
1876
1877         $('#updateModal').on('shown.bs.modal', function() {
1878                 notifyForUpdate(true);
1879         })
1880 }
1881
1882 function resetDashboardOptions() {
1883         NETDATA.resetOptions();
1884         if(setTheme('slate'))
1885                 location.reload();
1886 }
1887
1888 downloadAllCharts();
1889
1890 </script>
1891
1892 </body>
1893 </html>