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                         return saveLocalStorage('netdataTheme', theme);
 327                 }
 328         </script>
 329
 330         <!-- load the dashboard manager - it will do the rest -->
 331         <script type="text/javascript" src="dashboard.js?v26"></script>
 332 </head>
 333
 334 <body data-spy="scroll" data-target="#sidebar">
 335         <nav class="navbar navbar-default navbar-fixed-top" role="banner">
 336                 <div class="container">
 337                         <div class="navbar-header">
 338                                 <button class="navbar-toggle" type="button" data-toggle="collapse" data-target=".navbar-collapse">
 339                                         <span class="sr-only">Toggle navigation</span>
 340                                         <span class="icon-bar"></span>
 341                                         <span class="icon-bar"></span>
 342                                         <span class="icon-bar"></span>
 343                                 </button>
 344                                 <a href="/" class="navbar-brand" id="hostname">netdata</a>
 345                         </div>
 346                         <nav class="collapse navbar-collapse navbar-right" role="navigation">
 347                                 <ul class="nav navbar-nav">
 348                                         <li><a href="#" class="btn" data-toggle="modal" data-target="#optionsModal"><i class="fa fa-cog"></i> settings</a></li>
 349                                         <li><a href="https://github.com/firehol/netdata/wiki" class="btn" target="_blank"><i class="fa fa-github"></i> community</a></li>
 350                                         <li id="updateButton"><a href="#" class="btn" data-toggle="modal" data-target="#updateModal"><i class="fa fa-cloud-download"></i> update</a></li>
 351 <!--                                    <li><a href="old/" class="btn" target="_blank"><i class="fa fa-step-backward"></i> old dashboard</a></li> -->
 352                                         <li><a href="#" class="btn" data-toggle="modal" data-target="#helpModal"><i class="fa fa-question-circle"></i> help</a></li>
 353 <!--                                    <li><a href="#sec">Visualize</a></li>
 354                                         <li><a href="#sec">Prototype</a></li>
 355 -->                             </ul>
 356                         </nav>
 357                 </div>
 358         </nav>
 359
 360         <div id="masthead" style="display: none;">
 361                 <div class="container">
 362                         <div class="row">
 363                                 <div class="col-md-7">
 364                                         <h1>Netdata
 365                                                 <p class="lead">Real-time performance monitoring, in the greatest possible detail</p>
 366                                         </h1>
 367                                 </div>
 368                                 <div class="col-md-5">
 369                                         <div class="well well-lg">
 370                                                 <div class="row">
 371                                                 <div class="col-md-6">
 372                                                         <b>Drag</b> charts to pan.
 373                                                         <b>Shift + wheel</b> on them, to zoom in and out.
 374                                                         <b>Double-click</b> on them, to reset.
 375                                                         <b>Hover</b> on them too!
 376                                                         </div>
 377                                                 <div class="col-md-6">
 378                                                         <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>
 379                                                         </div>
 380                                                 </div>
 381                                         </div>
 382                                 </div>
 383                         </div>
 384                 </div>
 385         </div>
 386
 387         <div class="container">
 388                 <div class="row">
 389                         <div class="col-md-10" role="main">
 390                                 <div id="charts_div"></div>
 391                         </div>
 392                         <div class="col-md-2" role="complementary">
 393                                 <nav class="dashboard-sidebar hidden-print hidden-xs hidden-sm" id="sidebar" role="menu"></nav>
 394                         </div>
 395                 </div>
 396         </div>
 397
 398         <div id="footer" class="container" style="display: none;">
 399                 <div class="row">
 400                         <div class="col-md-10" role="main">
 401                                 <div class="p">
 402                                         <big><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></big><br/>
 403                                         <i class="fa fa-copyright"></i> Copyright 2016, Costa Tsaousis.<br/>
 404                                         Released under <a href="http://www.gnu.org/licenses/gpl-3.0.en.html" target="_blank">GPL v3 or later</a>.<br/>
 405                                 </div>
 406                                 <div class="p">
 407                                         <small>
 408                                                 <a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a> re-distributes these software tools:
 409
 410                                                 <i class="fa fa-circle"></i> The excellent <a href="http://dygraphs.com/" target="_blank">Dygraphs.com</a> web chart library,
 411                                                 <i class="fa fa-copyright"></i> Copyright 2009, Dan Vanderkam, <a href="http://dygraphs.com/legal.html" target="_blank">MIT License</a>
 412
 413                                                 <i class="fa fa-circle"></i> <a href="http://omnipotent.net/jquery.sparkline/" target="_blank">jQuery Sparklines</a> web chart library,
 414                                                 <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>
 415
 416                                                 <i class="fa fa-circle"></i> <a href="http://benpickles.github.io/peity/" target="_blank">Peity</a> web chart library,
 417                                                 <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>
 418
 419                                                 <i class="fa fa-circle"></i> <a href="https://rendro.github.io/easy-pie-chart/" target="_blank">Easy Pie Chart</a> web chart library,
 420                                                 <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>
 421
 422                                                 <i class="fa fa-circle"></i> <a href="http://bernii.github.io/gauge.js/" target="_blank">Gauge.js</a> web chart library,
 423                                                 <i class="fa fa-copyright"></i> Copyright, Bernard Kobos, <a href="http://bernii.github.io/gauge.js/" target="_blank">MIT License</a>
 424
 425                                                 <i class="fa fa-circle"></i> <a href="https://jquery.org/" target="_blank">jQuery</a>,
 426                                                 <i class="fa fa-copyright"></i> Copyright 2015, jQuery Foundation, <a href="https://jquery.org/license/" target="_blank">MIT License</a>
 427
 428                                                 <i class="fa fa-circle"></i> <a href="http://getbootstrap.com/getting-started/" target="_blank">Bootstrap</a>,
 429                                                 <i class="fa fa-copyright"></i> Copyright 2015, Twitter, <a href="http://getbootstrap.com/getting-started/#license-faqs" target="_blank">MIT License</a>
 430
 431                                                 <i class="fa fa-circle"></i> <a href="http://www.bootstraptoggle.com/" target="_blank">Bootstrap Toggle</a>,
 432                                                 <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>
 433
 434                                                 <i class="fa fa-circle"></i> <a href="https://jamesflorentino.github.io/nanoScrollerJS/" target="_blank">NanoScroller</a>,
 435                                                 <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>
 436
 437                                                 <i class="fa fa-circle"></i> <a href="https://github.com/marcj/css-element-queries" target="_blank">CSS Element Queries</a>,
 438                                                 <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>
 439
 440                                                 <i class="fa fa-circle"></i> <a href="https://fortawesome.github.io/Font-Awesome/" target="_blank">FontAwesome</a>,
 441                                                 <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>
 442
 443                                                 <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.
 444
 445                                                 <i class="fa fa-circle"></i> <a href="http://morrisjs.github.io/morris.js/" target="_blank">morris.js</a>,
 446                                                 <i class="fa fa-copyright"></i> Copyright 2013, Olly Smith, <a href="http://morrisjs.github.io/morris.js/" target="_blank">Simplified BSD License</a>
 447
 448                                                 <i class="fa fa-circle"></i> <a href="http://raphaeljs.com/" target="_blank">Raphaël</a>,
 449                                                 <i class="fa fa-copyright"></i> Copyright 2008, Dmitry Baranovskiy, <a href="http://raphaeljs.com/license.html" target="_blank">MIT License</a>
 450
 451                                                 <i class="fa fa-circle"></i> <a href="http://C3js.org/" target="_blank">C3</a>,
 452                                                 <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>
 453
 454                                                 <i class="fa fa-circle"></i> <a href="http://D3js.org/" target="_blank">D3</a>,
 455                                                 <i class="fa fa-copyright"></i> Copyright 2015, Mike Bostock, <a href="http://opensource.org/licenses/BSD-3-Clause" target="_blank">BSD License</a>
 456
 457                                                 <i class="fa fa-circle"></i> <a href="https://github.com/broofa/node-int64" target="_blank">node-int64</a>,
 458                                                 <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>
 459
 460                                         </small>
 461                                 </div>
 462                         </div>
 463                 </div>
 464         </div>
 465
 466         <div class="modal fade" id="welcomeModal" tabindex="-1" role="dialog" aria-labelledby="welcomeModalLabel">
 467                 <div class="modal-dialog modal-lg" role="document">
 468                         <div class="modal-content">
 469                                 <div class="modal-header">
 470                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 471                                         <h4 class="modal-title" id="welcomeModalLabel">Welcome!</h4>
 472                                 </div>
 473                                 <div class="modal-body">
 474                                                 <div class="p">
 475                                                 <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.
 476                                                 </div>
 477                                                 <div class="p">
 478                                                 <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.
 479                                                 </div>
 480                                                 <div class="p">
 481                                                 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.
 482                                                 </div>
 483                                                 <div class="p">
 484                                                 <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>%),
 485                                                 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).
 486                                                 </div>
 487                                                 <div class="p">
 488                                                 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>!).
 489                                                 </div>
 490                                                 <div class="p">
 491                                                 For more information please refer to the <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata wiki</a></b>.
 492                                                 </div>
 493                                 </div>
 494                                 <div class="modal-footer">
 495                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 496                                 </div>
 497                         </div>
 498                 </div>
 499         </div>
 500
 501         <div class="modal fade" id="helpModal" tabindex="-1" role="dialog" aria-labelledby="helpModalLabel">
 502                 <div class="modal-dialog modal-lg" role="document">
 503                         <div class="modal-content">
 504                                 <div class="modal-header">
 505                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 506                                         <h4 class="modal-title" id="helpModalLabel">Dashboard Help</h4>
 507                                 </div>
 508                                 <div class="modal-body">
 509
 510                                         <h4>Dygraphs (line, area and stacked area charts)</h4>
 511
 512                                         <!-- Nav tabs -->
 513                                         <ul class="nav nav-tabs" role="tablist">
 514                                                 <li role="presentation" class="active"><a href="#help_mouse" aria-controls="help_mouse" role="tab" data-toggle="tab">Mouse Interface</a></li>
 515                                                 <li role="presentation"><a href="#help_touch" aria-controls="help_touch" role="tab" data-toggle="tab">Touch Interface</a></li>
 516                                         </ul>
 517
 518                                         <!-- Tab panes -->
 519                                         <div class="tab-content">
 520                                                 <div role="tabpanel" class="tab-pane active" id="help_mouse">
 521                                                         <div class="p">
 522                                                                 <h4>Mouse Over / Hover</h4>
 523                                                                 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).
 524                                                                 <br/>
 525                                                                 All the other visible charts will also show and highlight their values for the same timestamp.
 526                                                         </div>
 527                                                         <hr/>
 528                                                         <div class="p">
 529                                                                 <h4>Drag Chart Contents</h4>
 530                                                                 Drag the contents of a chart to pan it horizontally.
 531                                                                 <br/>
 532                                                                 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).
 533                                                                 <br/>
 534                                                                 Once a chart is panned, auto refreshing stops for all charts. To enable it again, <b>double click</b> a panned chart.
 535                                                         </div>
 536                                                         <hr/>
 537                                                         <div class="p">
 538                                                                 <h4>Double Click</h4>
 539                                                                 Double Click a chart to reset all the charts to their default auto-refreshing state.
 540                                                         </div>
 541                                                         <hr/>
 542                                                         <div class="p">
 543                                                                 <h4>SHIFT + Drag</h4>
 544                                                                 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:
 545                                                                 <ul>
 546                                                                         <li>The already loaded chart contents are zoomed (low resolution)</li>
 547                                                                         <li>New data are transfered from the netdata server, to refresh the chart with possibly more detail.</li>
 548                                                                 </ul>
 549                                                                 Once a chart is zoomed, auto refreshing stops for all charts. To enable it again, <b>double click</b> a zoomed chart.
 550                                                         </div>
 551                                                         <hr/>
 552                                                         <div class="p">
 553                                                                 <h4>SHIFT + Mouse Wheel <small>(does not work on firefox and IE/Edge)</small></h4>
 554                                                                 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.
 555                                                                 <br/>
 556                                                                 Once a chart is zoomed, auto refreshing stops for all charts. To enable it again, <b>double click</b> a zoomed chart.
 557                                                         </div>
 558                                                         <hr/>
 559                                                         <div class="p">
 560                                                                 <h4>Legend Operations</h4>
 561                                                                 Click on the label or value of a dimension, will select / unselect this dimension.
 562                                                                 <br/>
 563                                                                 You can press any of the SHIFT or CONTROL keys and then click on legend labels or values, to select / unselect multiple dimensions.
 564                                                         </div>
 565                                                 </div>
 566                                                 <div role="tabpanel" class="tab-pane" id="help_touch">
 567                                                         <div class="p">
 568                                                                 <h4>Single Tap</h4>
 569                                                                 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).
 570                                                                 <br/>
 571                                                                 All the other visible charts will also show and highlight their values for the same timestamp.
 572                                                         </div>
 573                                                         <hr/>
 574                                                         <div class="p">
 575                                                                 <h4>Drag Chart Contents</h4>
 576                                                                 Touch and Drag the contents of a chart to pan it horizontally.
 577                                                                 <br/>
 578                                                                 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).
 579                                                                 <br/>
 580                                                                 Once a chart is panned, auto refreshing stops for all charts. To enable it again, <b>double tap</b> a panned chart.
 581                                                         </div>
 582                                                         <hr/>
 583                                                         <div class="p">
 584                                                                 <h4>Double Tap</h4>
 585                                                                 Double tap a chart to reset all the charts to their default auto-refreshing state.
 586                                                         </div>
 587                                                         <hr/>
 588                                                         <div class="p">
 589                                                                 <h4>Zoom <small>(does not work on firefox and IE/Edge)</small></h4>
 590                                                                 With two fingers, zoom in or out.
 591                                                                 <br/>
 592                                                                 Once a chart is zoomed, auto refreshing stops for all charts. To enable it again, <b>double click</b> a zoomed chart.
 593                                                         </div>
 594                                                         <hr/>
 595                                                         <div class="p">
 596                                                                 <h4>Legend Operations</h4>
 597                                                                 Tap on the label or value of a dimension, will select / unselect this dimension.
 598                                                         </div>
 599                                                 </div>
 600                                         </div>
 601                                 </div>
 602                                 <div class="modal-footer">
 603                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 604                                 </div>
 605                         </div>
 606                 </div>
 607         </div>
 608
 609         <div class="modal fade" id="optionsModal" tabindex="-1" role="dialog" aria-labelledby="optionsModalLabel">
 610                 <div class="modal-dialog modal-lg" role="document">
 611                         <div class="modal-content">
 612                                 <div class="modal-header">
 613                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 614                                         <h4 class="modal-title" id="optionsModalLabel">netdata dashboard options</h4>
 615                                 </div>
 616                                 <div class="modal-body">
 617                                         <center>
 618                                                 <small style="color: #BBBBBB;">These are browser settings. Each viewer has its own. They do not affect the operation of your netdata server.
 619                                                 <br/>
 620                                                 Settings take effect immediately and are saved permanently to browser local storage (except the refresh on focus / always option).
 621                                                 <br/>
 622                                                 To reset all options (including charts sizes) to their defaults, click <a href="#" onclick="resetDashboardOptions(); return false;">here</a>.</small>
 623                                         </center>
 624                                         <div style="padding: 10px;"></div>
 625
 626                                         <!-- Nav tabs -->
 627                                         <ul class="nav nav-tabs" role="tablist">
 628                                                 <li role="presentation" class="active"><a href="#settings_performance" aria-controls="settings_performance" role="tab" data-toggle="tab">Performance</a></li>
 629                                                 <li role="presentation"><a href="#settings_sync" aria-controls="settings_sync" role="tab" data-toggle="tab">Synchronization</a></li>
 630                                                 <li role="presentation"><a href="#settings_visual" aria-controls="settings_visual" role="tab" data-toggle="tab">Visual</a></li>
 631                                         </ul>
 632
 633                                         <!-- Tab panes -->
 634                                         <div class="tab-content">
 635                                                 <div role="tabpanel" class="tab-pane active" id="settings_performance">
 636                                                         <form id="optionsForm" method="get" class="form-horizontal">
 637                                                                 <div class="form-group">
 638                                                                         <table>
 639                                                                         <tr class="option-row">
 640                                                                                 <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>
 641                                                                                 <td class="option-info"><strong>When to refresh the charts?</strong><br/>
 642                                                                                         <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>
 643                                                                                 </td>
 644                                                                                 </tr>
 645                                                                         <tr class="option-row">
 646                                                                                 <td class="option-control">
 647                                                                                 <input id="eliminate_zero_dimensions" type="checkbox" checked data-toggle="toggle" data-on="Non Zero" data-off="All" data-width="110px">
 648                                                                                 </td>
 649                                                                                 <td class="option-info"><strong>Which dimensions to show?</strong><br/>
 650                                                                                         <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>
 651                                                                                 </td>
 652                                                                                 </tr>
 653                                                                         <tr class="option-row">
 654                                                                                 <td class="option-control"><input id="destroy_on_hide" type="checkbox" data-toggle="toggle" data-on="Destroy" data-off="Hide" data-width="110px"></td>
 655                                                                                 <td class="option-info"><strong>How to handle hidden charts?</strong><br/>
 656                                                                                         <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>
 657                                                                                 </td>
 658                                                                                 </tr>
 659                                                                         </table>
 660                                                                 </div>
 661                                                         </form>
 662                                                 </div>
 663                                                 <div role="tabpanel" class="tab-pane" id="settings_sync">
 664                                                         <form id="optionsForm" method="get" class="form-horizontal">
 665                                                                 <div class="form-group">
 666                                                                         <table>
 667                                                                         <tr class="option-row">
 668                                                                                 <td class="option-control"><input id="parallel_refresher" type="checkbox" checked data-toggle="toggle" data-on="Parallel" data-off="Sequencial" data-width="110px"></td>
 669                                                                                 <td class="option-info"><strong>Which chart refresh policy to use?</strong><br/>
 670                                                                                         <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>
 671                                                                                 </td>
 672                                                                                 </tr>
 673                                                                         <tr class="option-row" id="concurrent_refreshes_row">
 674                                                                                 <td class="option-control"></td>
 675                                                                                 <td class="option-info">
 676                                                                                         <table>
 677                                                                                         <tr class="option-row">
 678                                                                                         <td class="option-control">
 679                                                                                         <input id="concurrent_refreshes" type="checkbox" checked data-toggle="toggle" data-on="Resync" data-off="Best Effort" data-width="110px">
 680                                                                                         </td>
 681                                                                                         <td class="option-info">
 682                                                                                         <strong>Shall we re-sync chart refreshes?</strong><br/>
 683                                                                                         <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>
 684                                                                                         </td>
 685                                                                                         </tr>
 686                                                                                         </table>
 687                                                                                 </td>
 688                                                                                 </tr>
 689                                                                         <tr class="option-row">
 690                                                                                 <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>
 691                                                                                 <td class="option-info"><strong>Sync hover selection on all charts?</strong><br/>
 692                                                                                         <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>
 693                                                                                 </td>
 694                                                                                 </tr>
 695                                                                         <tr class="option-row">
 696                                                                                 <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>
 697                                                                                 <td class="option-info"><strong>Sync pan and zoom on all charts?</strong><br/>
 698                                                                                         <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>
 699                                                                                 </td>
 700                                                                                 </tr>
 701                                                                         </table>
 702                                                                 </div>
 703                                                         </form>
 704                                                 </div>
 705                                                 <div role="tabpanel" class="tab-pane" id="settings_visual">
 706                                                         <form id="optionsForm" method="get" class="form-horizontal">
 707                                                                 <div class="form-group">
 708                                                                         <table>
 709                                                                         <tr class="option-row">
 710                                                                                 <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>
 711                                                                                 <td class="option-info"><strong>Which theme to use?</strong><br/>
 712                                                                                         <small>Netdata comes with two themes: <b>Dark</b> (the default) and <b>White</b>.</small>
 713                                                                                 </td>
 714                                                                                 </tr>
 715                                                                         <tr class="option-row">
 716                                                                                 <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>
 717                                                                                 <td class="option-info"><strong>Enable data padding when panning and zooming?</strong><br/>
 718                                                                                         <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>
 719                                                                                 </td>
 720                                                                                 </tr>
 721                                                                         <tr class="option-row">
 722                                                                                 <td class="option-control"><input id="smooth_plot" type="checkbox" checked data-toggle="toggle"  data-on="Smooth" data-off="Rough" data-width="110px"></td>
 723                                                                                 <td class="option-info"><strong>Enable Bézier lines on charts?</strong><br/>
 724                                                                                         <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>
 725                                                                                 </td>
 726                                                                                 </tr>
 727                                                                         </table>
 728                                                                 </div>
 729                                                         </form>
 730                                                 </div>
 731                                         </div>
 732                                 </div>
 733                                 <div class="modal-footer">
 734                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 735                                 </div>
 736                         </div>
 737                 </div>
 738         </div>
 739
 740
 741         <div class="modal fade" id="updateModal" tabindex="-1" role="dialog" aria-labelledby="updateModalLabel">
 742                 <div class="modal-dialog" role="document">
 743                         <div class="modal-content">
 744                                 <div class="modal-header">
 745                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 746                                         <h4 class="modal-title" id="updateModalLabel">Update Check</h4>
 747                                 </div>
 748                                 <div class="modal-body">
 749                                         Your netdata version: <b><code><span id="netdataVersion">Unknown</span></code></b>
 750                                         <br/>
 751                                         <div style="padding: 10px;"></div>
 752                                         <div id="versionCheckLog">Not checked yet. Please press the Check Now button.</div>
 753                                 </div>
 754                                 <div class="modal-footer">
 755                                         <a href="#" onclick="notifyForUpdate(true);" type="button" class="btn btn-default">Check Now</a>
 756                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 757                                 </div>
 758                         </div>
 759                 </div>
 760         </div>
 761
 762 <script>
 763
 764 var demo_hostname = 'netdata.firehol.org';
 765 // var demo_hostname = 'box';
 766
 767 if(document.location.hostname === demo_hostname) {
 768         document.getElementById('masthead').style.display = 'block';
 769 }
 770
 771 var options = {
 772         sparklines_registry: {},
 773         submenu_names: {},
 774         data: null,
 775         hostname: 'netdata_server', // will be overwritten by the netdata server
 776         categories: new Array(),
 777         categories_idx: {},
 778         families: new Array(),
 779         families_idx: {},
 780
 781         chartsPerRow: 0,
 782         chartsMinWidth: 1450,
 783         chartsHeight: 180,
 784         sparklinesHeight: 60
 785 };
 786
 787 // generate a sparkline
 788 // used in the documentation
 789 function sparkline(chart, dimension, units) {
 790         var key = chart + '.' + dimension;
 791
 792         if(typeof units === 'undefined')
 793                 units = '';
 794
 795         if(typeof options.sparklines_registry[key] === 'undefined')
 796                 options.sparklines_registry[key] = { count: 1 };
 797         else
 798                 options.sparklines_registry[key].count++;
 799
 800         key = key + '.' + options.sparklines_registry[key].count;
 801
 802         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 + ')';
 803
 804         return h;
 805 }
 806
 807 function chartsPerRow(total) {
 808         if(options.chartsPerRow === 0) {
 809                 width = Math.floor(total / options.chartsMinWidth);
 810                 if(width === 0) width = 1;
 811                 return width;
 812         }
 813         else return options.chartsPerRow;
 814 }
 815
 816 function prioritySort(a, b) {
 817         if(a.priority < b.priority) return -1;
 818         if(a.priority > b.priority) return 1;
 819         if(a.name < b.name) return -1;
 820         return 1;
 821 }
 822
 823 function sortObjectByPriority(object) {
 824         var idx = {};
 825         var sorted = new Array();
 826
 827         for(var i in object) {
 828                 if(typeof idx[i] === 'undefined') {
 829                         idx[i] = object[i];
 830                         sorted.push(i);
 831                 }
 832         }
 833
 834         sorted.sort(function(a, b) {
 835                 if(idx[a].priority < idx[b].priority) return -1;
 836                 if(idx[a].priority > idx[b].priority) return 1;
 837                 if(a < b) return -1;
 838                 return 1;
 839         });
 840
 841         return sorted;
 842 }
 843
 844 // ----------------------------------------------------------------------------
 845
 846 function gaugeChart(title, width, dimensions, colors) {
 847         if(typeof colors === 'undefined')
 848                 colors = '';
 849
 850         if(typeof dimensions === 'undefined')
 851                 dimensions = '';
 852
 853         return '<div data-netdata="CHART_UNIQUE_ID"'
 854                                                         + ' data-dimensions="' + dimensions + '"'
 855                                                         + ' data-chart-library="gauge"'
 856                                                         + ' data-gauge-adjust="width"'
 857                                                         + ' data-title="' + title + '"'
 858                                                         + ' data-width="' + width + '"'
 859                                                         + ' data-before="0"'
 860                                                         + ' data-after="-CHART_DURATION"'
 861                                                         + ' data-points="CHART_DURATION"'
 862                                                         + ' data-colors="' + colors + '"'
 863                                                         + ' role="application"></div>';
 864 }
 865
 866 // ----------------------------------------------------------------------------
 867
 868 var menuData = {
 869         'system': {
 870                 title: 'System Overview',
 871                 info: 'Overview of the key system metrics.'
 872         },
 873
 874         'ap': {
 875                 title: 'Access Points',
 876                 info: undefined
 877         },
 878
 879         'tc': {
 880                 title: 'Quality of Service',
 881                 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).'
 882         },
 883
 884         'net': {
 885                 title: 'Network Interfaces',
 886                 info: 'Per network interface statistics collected from <code>/proc/net/dev</code>.'
 887         },
 888
 889         'ipv4': {
 890                 title: 'IPv4 Networking',
 891                 info: undefined
 892         },
 893
 894         'ipv6': {
 895                 title: 'IPv6 Networking',
 896                 info: undefined
 897         },
 898
 899         'ipvs': {
 900                 title: 'IP Virtual Server',
 901                 info: undefined
 902         },
 903
 904         'netfilter': {
 905                 title: 'Firewall (netfilter)',
 906                 info: undefined
 907         },
 908
 909         'cpu': {
 910                 title: 'CPUs',
 911                 info: undefined
 912         },
 913
 914         'mem': {
 915                 title: 'Memory',
 916                 info: undefined
 917         },
 918
 919         'disk': {
 920                 title: 'Disks',
 921                 info: undefined
 922         },
 923
 924         'sensors': {
 925                 title: 'Sensors',
 926                 info: undefined
 927         },
 928
 929         'nfsd': {
 930                 title: 'File Server (nfsd)',
 931                 info: undefined
 932         },
 933
 934         'apps': {
 935                 title: 'Applications',
 936                 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>.',
 937                 height: 1.5
 938         },
 939
 940         'netdata': {
 941                 title: 'Netdata Monitoring',
 942                 info: undefined
 943         },
 944
 945         'example': {
 946                 title: 'Example Charts',
 947                 info: undefined
 948         },
 949 };
 950
 951 var submenuData = {
 952         'mem.ksm': {
 953                 title: 'Memory Deduper',
 954                 info: 'Kernel Same-page Merging (KSM) is the kernel memory de-duper.'
 955         }
 956 };
 957
 958 var chartData = {
 959         'system.cpu': {
 960                 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.'
 961         },
 962
 963         'system.load': {
 964                 info: 'Current system load read from <code>/proc/loadavg</code>.',
 965                 height: 0.7
 966         },
 967
 968         'system.io': {
 969                 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.'
 970         },
 971
 972         'system.swapio': {
 973                 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).'
 974         },
 975
 976         'system.pgfaults': {
 977                 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.'
 978         },
 979
 980         'system.entropy': {
 981                 colors: '#CC22AA',
 982                 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.'
 983         },
 984
 985         'system.forks': {
 986                 colors: '#5555DD',
 987                 info: 'The number of new processes created per second, read from <code>/proc/stat</code>.'
 988         },
 989
 990         'system.intr': {
 991                 colors: '#DD5555',
 992                 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.'
 993         },
 994
 995         'system.interrupts': {
 996                 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.'
 997         },
 998
 999         'system.softirqs': {
1000                 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.'
1001         },
1002
1003         'system.processes': {
1004                 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.'
1005         },
1006
1007         'system.active_processes': {
1008                 info: 'All system active processes, read from <code>/proc/loadavg</code>.'
1009         },
1010
1011         'system.ctxt': {
1012                 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.'
1013         },
1014
1015         'system.idlejitter': {
1016                 colors: '#5555AA',
1017                 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 different 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).'
1018         },
1019
1020         'system.ipv4': {
1021                 info: 'Total IPv4 Traffic, read from <code>/proc/net/netstat</code>.'
1022         },
1023
1024         'system.ipv6': {
1025                 info: 'Total IPv6 Traffic, read from <code>/proc/net/snmp6</code>.'
1026         },
1027
1028         'system.ram': {
1029                 info: 'System memory, read from <code>/proc/meminfo</code>.'
1030         },
1031
1032         'system.swap': {
1033                 info: 'System swap memory, read from <code>/proc/meminfo</code>.'
1034         },
1035
1036         'mem.ksm_savings': {
1037                 heads: [
1038                         gaugeChart('Saved', '12%', 'savings', '#0099CC')
1039                 ]
1040         },
1041
1042         'mem.ksm_ratios': {
1043                 heads: [
1044                         function(id) {
1045                                 return  '<div data-netdata="' + id + '"'
1046                                         + ' data-gauge-max-value="100"'
1047                                         + ' data-chart-library="gauge"'
1048                                         + ' data-title="Savings"'
1049                                         + ' data-units="percentage %"'
1050                                         + ' data-gauge-adjust="width"'
1051                                         + ' data-width="12%"'
1052                                         + ' data-before="0"'
1053                                         + ' data-after="-CHART_DURATION"'
1054                                         + ' data-points="CHART_DURATION"'
1055                                         + ' role="application"></div>';
1056                         }
1057                 ]
1058         },
1059
1060         'mem.committed': {
1061                 colors: NETDATA.colors[3]
1062         },
1063
1064         'apps.cpu': {
1065                 height: 2.0
1066         },
1067
1068         'apps.preads': {
1069                 height: 2.0
1070         },
1071
1072         'apps.pwrites': {
1073                 height: 2.0
1074         },
1075
1076         'tc.qos': {
1077                 heads: [
1078                         function(id) {
1079                                 if(id.match(/.*-ifb$/))
1080                                         return gaugeChart('Inbound', '12%', '', '#5555AA');
1081                                 else
1082                                         return gaugeChart('Outbound', '12%', '', '#AA9900');
1083                         }
1084                 ]
1085         },
1086
1087         'net.net': {
1088                 heads: [
1089                         gaugeChart('Received', '12%', 'received'),
1090                         gaugeChart('Sent', '12%', 'sent')
1091                 ]
1092         },
1093
1094         'disk.util': {
1095                 colors: '#FF5588',
1096                 heads: [
1097                         gaugeChart('Utilization', '12%', '', '#FF5588')
1098                 ]
1099         },
1100
1101         'disk.backlog': {
1102                 colors: '#0099CC'
1103         },
1104
1105         'disk.io': {
1106                 heads: [
1107                         gaugeChart('Read', '12%', 'reads'),
1108                         gaugeChart('Write', '12%', 'writes')
1109                 ]
1110         },
1111
1112         'netfilter.sockets': {
1113                 colors: '#88AA00',
1114                 heads: [
1115                         gaugeChart('Active Connections', '12%', '', '#88AA00')
1116                 ]
1117         },
1118
1119         'netfilter.new': {
1120                 heads: [
1121                         gaugeChart('New Connections', '12%', 'new', '#5555AA')
1122                 ]
1123         },
1124
1125         'disk.iotime': {
1126                 height: 0.5
1127         },
1128         'disk.mops': {
1129                 height: 0.5
1130         },
1131         'disk.svctm': {
1132                 height: 0.5
1133         },
1134         'disk.avgsz': {
1135                 height: 0.5
1136         },
1137         'disk.await': {
1138                 height: 0.5
1139         },
1140
1141         'apache.connections': {
1142                 colors: NETDATA.colors[4],
1143                 mainheads: [
1144                         gaugeChart('Connections', '12%', '', NETDATA.colors[4])
1145                 ]
1146         },
1147
1148         'apache.requests': {
1149                 colors: NETDATA.colors[0],
1150                 mainheads: [
1151                         gaugeChart('Connections', '12%', '', NETDATA.colors[0])
1152                 ]
1153         },
1154
1155         'apache.net': {
1156                 colors: NETDATA.colors[3],
1157                 mainheads: [
1158                         gaugeChart('Bandwidth', '12%', '', NETDATA.colors[3])
1159                 ]
1160         },
1161
1162         'apache.workers': {
1163                 mainheads: [
1164                         function(id) {
1165                                 return  '<div data-netdata="' + id + '"'
1166                                         + ' data-dimensions="busy"'
1167                                         + ' data-append-options="percentage"'
1168                                         + ' data-gauge-max-value="100"'
1169                                         + ' data-chart-library="gauge"'
1170                                         + ' data-title="Workers Utilization"'
1171                                         + ' data-units="percentage %"'
1172                                         + ' data-gauge-adjust="width"'
1173                                         + ' data-width="12%"'
1174                                         + ' data-before="0"'
1175                                         + ' data-after="-CHART_DURATION"'
1176                                         + ' data-points="CHART_DURATION"'
1177                                         + ' role="application"></div>';
1178                         }
1179                 ]
1180         },
1181
1182         'apache.bytesperreq': {
1183                 colors: NETDATA.colors[3],
1184                 height: 0.5
1185         },
1186
1187         'apache.reqpersec': {
1188                 colors: NETDATA.colors[4],
1189                 height: 0.5
1190         },
1191
1192         'apache.bytespersec': {
1193                 colors: NETDATA.colors[6],
1194                 height: 0.5
1195         },
1196
1197         'nginx.connections': {
1198                 colors: NETDATA.colors[4],
1199                 mainheads: [
1200                         gaugeChart('Connections', '12%', '', NETDATA.colors[4])
1201                 ]
1202         },
1203
1204         'nginx.requests': {
1205                 colors: NETDATA.colors[0],
1206                 mainheads: [
1207                         gaugeChart('Requests', '12%', '', NETDATA.colors[0])
1208                 ]
1209         }
1210 };
1211
1212 function anyAttribute(obj, attr, key, def) {
1213         if(typeof obj[key] !== 'undefined') {
1214                 if(typeof obj[key][attr] !== 'undefined')
1215                         return obj[key][attr];
1216         }
1217         return def;
1218 }
1219
1220 function menuTitle(menu) {
1221         return anyAttribute(menuData, 'title', menu, menu);
1222 }
1223
1224 function menuInfo(menu) {
1225         return anyAttribute(menuData, 'title', menu, null);
1226 }
1227
1228 function menuHeight(menu, relative) {
1229         return anyAttribute(menuData, 'height', menu, 1.0) * relative;
1230 }
1231
1232 function submenuTitle(menu, submenu) {
1233         var key = menu + '.' + submenu;
1234         return anyAttribute(submenuData, 'title', key, submenu);
1235 }
1236
1237 function submenuInfo(menu, submenu) {
1238         var key = menu + '.' + submenu;
1239         return anyAttribute(submenuData, 'info', key, null);
1240 }
1241
1242 function submenuHeight(menu, submenu, relative) {
1243         var key = menu + '.' + submenu;
1244         return anyAttribute(submenuData, 'height', key, 1.0) * relative;
1245 }
1246
1247
1248 function chartInfo(id) {
1249         if(typeof chartData[id] !== 'undefined' && typeof chartData[id].info !== 'undefined')
1250                 return '<div class="chart-message netdata-chart-alignment" role="document">' + chartData[id].info + '</div>';
1251         else
1252                 return '';
1253 }
1254
1255 function chartHeight(id, def) {
1256         if(typeof chartData[id] !== 'undefined' && typeof chartData[id].height !== 'undefined')
1257                 return def * chartData[id].height;
1258         else
1259                 return def;
1260 }
1261
1262
1263 // ----------------------------------------------------------------------------
1264
1265 // enrich the data structure returned by netdata
1266 // to reflect our menu system and content
1267 function enrichChartData(chart) {
1268         var tmp = chart.type.split('_')[0];
1269
1270         switch(tmp) {
1271                 case 'ap':
1272                 case 'net':
1273                 case 'disk':
1274                         chart.menu = tmp;
1275                         break;
1276
1277                 case 'tc':
1278                         chart.menu = tmp;
1279
1280                         // find the interface name from the name
1281                         if(typeof options.submenu_names[chart.family] === 'undefined' || options.submenu_names[chart.family] === chart.family)
1282                                 options.submenu_names[chart.family] = chart.name.split('.')[1].split('_')[0];
1283
1284                         // increase the priority of IFB devices
1285                         if(chart.id.match(/.*-ifb$/))
1286                                 chart.priority--;
1287
1288                         break;
1289
1290                 default:
1291                         chart.menu = chart.type;
1292                         break;
1293         }
1294
1295         chart.submenu = chart.family;
1296 }
1297
1298 // ----------------------------------------------------------------------------
1299
1300 function name2id(s) {
1301         return s
1302                 .replace(' ', '_')
1303                 .replace('(', '_')
1304                 .replace(')', '_')
1305                 .replace('.', '_')
1306                 .replace('/', '_');
1307 }
1308
1309 function headMain(charts, duration) {
1310         var head = '';
1311
1312         if(typeof charts['system.swap'] !== 'undefined')
1313                 head += '<div style="margin-right: 10px;" data-netdata="system.swap"'
1314                 + ' data-dimensions="free"'
1315                 + ' data-append-options="percentage"'
1316                 + ' data-chart-library="easypiechart"'
1317                 + ' data-title="Free Swap"'
1318                 + ' data-units="%"'
1319                 + ' data-easypiechart-max-value="100"'
1320                 + ' data-width="8%"'
1321                 + ' data-before="0"'
1322                 + ' data-after="-' + duration.toString() + '"'
1323                 + ' data-points="' + duration.toString() + '"'
1324                 + ' data-colors="#DD4400"'
1325                 + ' role="application"></div>';
1326
1327         if(typeof charts['system.io'] !== 'undefined') {
1328                 head += '<div style="margin-right: 10px;" data-netdata="system.io"'
1329                 + ' data-dimensions="in"'
1330                 + ' data-chart-library="easypiechart"'
1331                 + ' data-title="Disk Read"'
1332                 + ' data-units="KB / s"'
1333                 + ' data-width="10%"'
1334                 + ' data-before="0"'
1335                 + ' data-after="-' + duration.toString() + '"'
1336                 + ' data-points="' + duration.toString() + '"'
1337                 + ' role="application"></div>';
1338
1339                 head += '<div style="margin-right: 10px;" data-netdata="system.io"'
1340                 + ' data-dimensions="out"'
1341                 + ' data-chart-library="easypiechart"'
1342                 + ' data-title="Disk Write"'
1343                 + ' data-units="KB / s"'
1344                 + ' data-width="10%"'
1345                 + ' data-before="0"'
1346                 + ' data-after="-' + duration.toString() + '"'
1347                 + ' data-points="' + duration.toString() + '"'
1348                 + ' role="application"></div>';
1349         }
1350
1351         if(typeof charts['system.cpu'] !== 'undefined')
1352                 head += '<div data-netdata="system.cpu"'
1353                 + ' data-chart-library="gauge"'
1354                 + ' data-title="CPU"'
1355                 + ' data-units="%"'
1356                 + ' data-gauge-max-value="100"'
1357                 + ' data-width="18%"'
1358                 + ' data-after="-' + duration.toString() + '"'
1359                 + ' data-points="' + duration.toString() + '"'
1360                 + ' data-colors="' + NETDATA.colors[12] + '"'
1361                 + ' role="application"></div>';
1362
1363         if(typeof charts['system.ipv4'] !== 'undefined') {
1364                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv4"'
1365                 + ' data-dimensions="received"'
1366                 + ' data-chart-library="easypiechart"'
1367                 + ' data-title="IPv4 Inbound"'
1368                 + ' data-units="kbps"'
1369                 + ' data-width="10%"'
1370                 + ' data-before="0"'
1371                 + ' data-after="-' + duration.toString() + '"'
1372                 + ' data-points="' + duration.toString() + '"'
1373                 + ' role="application"></div>';
1374
1375                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv4"'
1376                 + ' data-dimensions="sent"'
1377                 + ' data-chart-library="easypiechart"'
1378                 + ' data-title="IPv4 Outbound"'
1379                 + ' data-units="kbps"'
1380                 + ' data-width="10%"'
1381                 + ' data-before="0"'
1382                 + ' data-after="-' + duration.toString() + '"'
1383                 + ' data-points="' + duration.toString() + '"'
1384                 + ' role="application"></div>';
1385         }
1386         else if(typeof charts['system.ipv6'] !== 'undefined') {
1387                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv6"'
1388                 + ' data-dimensions="received"'
1389                 + ' data-chart-library="easypiechart"'
1390                 + ' data-title="IPv6 Inbound"'
1391                 + ' data-units="kbps"'
1392                 + ' data-width="10%"'
1393                 + ' data-before="0"'
1394                 + ' data-after="-' + duration.toString() + '"'
1395                 + ' data-points="' + duration.toString() + '"'
1396                 + ' role="application"></div>';
1397
1398                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv6"'
1399                 + ' data-dimensions="sent"'
1400                 + ' data-chart-library="easypiechart"'
1401                 + ' data-title="IPv6 Outbound"'
1402                 + ' data-units="kbps"'
1403                 + ' data-width="10%"'
1404                 + ' data-before="0"'
1405                 + ' data-after="-' + duration.toString() + '"'
1406                 + ' data-points="' + duration.toString() + '"'
1407                 + ' role="application"></div>';
1408         }
1409
1410         if(typeof charts['system.ram'] !== 'undefined')
1411                 head += '<div style="margin-right: 10px;" data-netdata="system.ram"'
1412                 + ' data-dimensions="cached|free"'
1413                 + ' data-append-options="percentage"'
1414                 + ' data-chart-library="easypiechart"'
1415                 + ' data-title="Available RAM"'
1416                 + ' data-units="%"'
1417                 + ' data-easypiechart-max-value="100"'
1418                 + ' data-width="8%"'
1419                 + ' data-after="-' + duration.toString() + '"'
1420                 + ' data-points="' + duration.toString() + '"'
1421                 + ' data-colors="' + NETDATA.colors[7] + '"'
1422                 + ' role="application"></div>';
1423
1424         return head;
1425 }
1426
1427 function generateHeadCharts(type, chart, duration) {
1428         var head = '';
1429         var hcharts = anyAttribute(chartData, type, chart.context, []);
1430         if(hcharts.length > 0) {
1431                 var hi = 0, hlen = hcharts.length;
1432                 while(hi < hlen) {
1433                         if(typeof hcharts[hi] === 'function')
1434                                 head += hcharts[hi](chart.id).replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
1435                         else
1436                                 head += hcharts[hi].replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
1437                         hi++;
1438                 }
1439         }
1440         return head;
1441 }
1442
1443 function renderPage(menus, data) {
1444         var div = document.getElementById('charts_div');
1445         var pcent_width = Math.floor(100 / chartsPerRow($(div).width()));
1446
1447         // find the proper duration for per-second updates
1448         var duration = Math.round(($(div).width() * pcent_width / 100 * data.update_every / 3) / 60) * 60;
1449         var html = '';
1450         var sidebar = '<ul class="nav dashboard-sidenav" data-spy="affix" id="sidebar_ul">';
1451         var mainhead = headMain(data.charts, duration);
1452
1453         // sort the menus
1454         var main = sortObjectByPriority(menus);
1455         var i = 0, len = main.length;
1456         while(i < len) {
1457                 var menu = main[i++];
1458
1459                 // generate an entry at the main menu
1460
1461                 sidebar += '<li class=""><a href="#' + menu + '">' + menus[menu].title + '</a><ul class="nav">';
1462                 html += '<div role="section"><div role="sectionhead"><h1 id="' + menu + '" role="heading">' + menus[menu].title + '</h1></div><div id="' + menu + '" role="document">';
1463
1464                 if(menus[menu].info !== null)
1465                         html += menus[menu].info;
1466
1467                 // console.log(' >> ' + menu + ' (' + menus[menu].priority + '): ' + menus[menu].title);
1468
1469                 var shtml = '';
1470                 var mhead = '<div style="width: 100%; text-align: center;">' + mainhead;
1471                 mainhead = '';
1472
1473                 // sort the submenus of this menu
1474                 var sub = sortObjectByPriority(menus[menu].submenus);
1475                 var si = 0, slen = sub.length;
1476                 while(si < slen) {
1477                         var submenu = sub[si++];
1478
1479                         // generate an entry at the submenu
1480                         sidebar += '<li class><a href="#' + name2id(menu + '_' + submenu) + '">' + menus[menu].submenus[submenu].title + '</a></li>';
1481                         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>';
1482
1483                         if(menus[menu].submenus[submenu].info !== null)
1484                                 shtml += '<div class="chart-message netdata-chart-alignment" role="document">' + menus[menu].submenus[submenu].info + '</div>';
1485
1486                         var head = '<div style="width: 100%; text-align: center;">';
1487                         var chtml = '';
1488
1489                         // console.log('    \------- ' + submenu + ' (' + menus[menu].submenus[submenu].priority + '): ' + menus[menu].submenus[submenu].title);
1490
1491                         // sort the charts in this submenu of this menu
1492                         menus[menu].submenus[submenu].charts.sort(prioritySort);
1493                         var ci = 0, clen = menus[menu].submenus[submenu].charts.length;
1494                         while(ci < clen) {
1495                                 var chart = menus[menu].submenus[submenu].charts[ci++];
1496
1497                                 // generate the submenu heading charts
1498                                 mhead += generateHeadCharts('mainheads', chart, duration);
1499                                 head += generateHeadCharts('heads', chart, duration);
1500
1501                                 // generate the chart
1502                                 chtml += chartInfo(chart.context) + '<div data-netdata="' + chart.id + '"'
1503                                         + ' data-width="' + pcent_width.toString() + '%"'
1504                                         + ' data-height="' + chartHeight(chart.context, options.chartsHeight).toString() + 'px"'
1505                                         + ' data-before="0"'
1506                                         + ' data-after="-' + duration.toString() + '"'
1507                                         + ' data-id="' + name2id(options.hostname + '/' + chart.id) + '"'
1508                                         + ' data-colors="' + anyAttribute(chartData, 'colors', chart.context, '') + '"'
1509                                         + ' role="application"></div>';
1510
1511                                 // console.log('         \------- ' + chart.id + ' (' + chart.priority + '): ' + chart.context  + ' height: ' + menus[menu].submenus[submenu].height);
1512                         }
1513
1514                         head += '</div>';
1515                         shtml += head + chtml + '</div>';
1516                 }
1517
1518                 mhead += '</div>';
1519                 sidebar += '</ul></li>';
1520                 html += mhead + shtml + '</div></div><hr role="separator"/>';
1521         }
1522
1523         sidebar += '</ul>';
1524         div.innerHTML = html;
1525         document.getElementById('sidebar').innerHTML = sidebar;
1526         finalizePage();
1527 }
1528
1529 function renderChartsAndMenu(data) {
1530         var menus = {};
1531         var charts = data.charts;
1532
1533         for(var c in charts) {
1534                 enrichChartData(charts[c]);
1535
1536                 // create the menu
1537                 if(typeof menus[charts[c].menu] === 'undefined') {
1538                         menus[charts[c].menu] = {
1539                                 priority: charts[c].priority,
1540                                 submenus: {},
1541                                 title: menuTitle(charts[c].menu),
1542                                 info: menuInfo(charts[c].menu),
1543                                 height: menuHeight(charts[c].menu, options.chartsHeight)
1544                         };
1545                 }
1546
1547                 if(charts[c].priority < menus[charts[c].menu].priority)
1548                         menus[charts[c].menu].priority = charts[c].priority;
1549
1550                 // create the submenu
1551                 if(typeof menus[charts[c].menu].submenus[charts[c].submenu] === 'undefined') {
1552                         menus[charts[c].menu].submenus[charts[c].submenu] = {
1553                                 priority: charts[c].priority,
1554                                 charts: new Array(),
1555                                 title: null,
1556                                 info: submenuInfo(charts[c].menu, charts[c].submenu),
1557                                 height: submenuHeight(charts[c].menu, charts[c].submenu, menus[charts[c].menu].height)
1558                         };
1559                 }
1560
1561                 if(charts[c].priority < menus[charts[c].menu].submenus[charts[c].submenu].priority)
1562                         menus[charts[c].menu].submenus[charts[c].submenu].priority = charts[c].priority;
1563
1564                 // index the chart in the menu/submenu
1565                 menus[charts[c].menu].submenus[charts[c].submenu].charts.push(charts[c]);
1566         }
1567
1568         for(var m in menus) {
1569                 for(var s in menus[m].submenus) {
1570                         // set the family using a name
1571                         if(typeof options.submenu_names[s] !== 'undefined') {
1572                                 menus[m].submenus[s].title = s + ' (' + options.submenu_names[s] + ')';
1573                         }
1574                         else {
1575                                 menus[m].submenus[s].title = submenuTitle(m, s);
1576                         }
1577                 }
1578         }
1579
1580         renderPage(menus, data);
1581 }
1582
1583 function downloadAllCharts(netdata_url) {
1584         if(typeof netdata_url === 'undefined' || netdata_url === null)
1585                 netdata_url = NETDATA.serverDefault;
1586
1587         NETDATA.pause(function() {
1588
1589                 // download all the charts the server knows
1590                 NETDATA.chartRegistry.downloadAll(netdata_url, function(data) {
1591
1592                         options.data = data;
1593                         options.hostname = data.hostname;
1594                         document.getElementById('hostname').innerHTML = options.hostname;
1595                         document.getElementById('hostname').href = NETDATA.serverDefault;
1596                         document.title = options.hostname + ' dashboard';
1597
1598                         renderChartsAndMenu(data);
1599
1600                         // prepare our DOM
1601 //                      prepareScreen(data);
1602
1603                         // due to affix issues, prepareScreen() will unpause
1604                         // netdata as needed
1605                 });
1606         });
1607 }
1608
1609 // ----------------------------------------------------------------------------
1610
1611 function versionLog(msg) {
1612         document.getElementById('versionCheckLog').innerHTML = msg;
1613 }
1614
1615 function getNetdataVersion(callback) {
1616         versionLog('Downloading installed version info from netdata...');
1617
1618         $.ajax({
1619                 url: 'version.txt',
1620                 async: true,
1621                 cache: false
1622         })
1623         .done(function(data) {
1624                 data = data.replace(/(\r\n|\n|\r)/gm,"")
1625                 versionLog('Installed version of netdata is ' + data);
1626                 document.getElementById('netdataVersion').innerHTML = data;
1627                 callback(data);
1628         })
1629         .fail(function() {
1630                 versionLog('Failed to download installed version info from netdata!');
1631                 callback(null);
1632         });
1633 }
1634
1635 function getGithubLatestCommit(callback) {
1636         versionLog('Downloading latest version info from github...');
1637
1638         $.ajax({
1639                 url: 'https://api.github.com/repos/firehol/netdata/commits',
1640                 async: true,
1641                 cache: false
1642         })
1643         .done(function(data) {
1644                 versionLog('Latest version info from github is ' + data[0].sha);
1645                 callback(data[0].sha);
1646         })
1647         .fail(function() {
1648                 versionLog('Failed to download installed version info from github!');
1649                 callback(null);
1650         });
1651 }
1652
1653 function checkForUpdate(callback) {
1654         getNetdataVersion(function(sha1) {
1655                 if(sha1 === null) callback(null, null);
1656
1657                 getGithubLatestCommit(function(sha2) {
1658                         callback(sha1, sha2);
1659                 });
1660         });
1661
1662         return null;
1663 }
1664
1665 var updateBlinkCounter = 0;
1666 function notifyForUpdate(force) {
1667         versionLog('<p>checking for updates...</p>');
1668
1669         var now = new Date().getTime();
1670
1671         if(typeof force === 'undefined' || force !== true) {
1672                 var last = loadLocalStorage('last_update_check');
1673
1674                 if(typeof last === 'string')
1675                         last = parseInt(last);
1676                 else
1677                         last = 0;
1678
1679                 if(now - last < 3600000 * 8) {
1680                         // no need to check it - too soon
1681                         return;
1682                 }
1683         }
1684
1685         checkForUpdate(function(sha1, sha2) {
1686                 var save = false;
1687
1688                 if(sha1 === null) {
1689                         save = false;
1690                         versionLog('<p><big>Failed to get your netdata version!</big></p>');
1691                 }
1692                 else if(sha2 === null) {
1693                         save = false;
1694                         versionLog('<p><big>Failed to get the latest version from github.</big></p>');
1695                 }
1696                 else if(sha1 === sha2) {
1697                         save = true;
1698                         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>');
1699                 }
1700                 else {
1701                         save = true;
1702                         var compare = 'https://github.com/firehol/netdata/compare/' + sha1.toString() + '...' + sha2.toString();
1703
1704                         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>');
1705
1706                         function updateButtonBlink() {
1707                                 updateBlinkCounter--;
1708                                 if(updateBlinkCounter > 0)
1709                                         $('#updateButton').fadeOut(500).fadeIn(500, updateButtonBlink);
1710                         }
1711
1712                         if(updateBlinkCounter === 0) {
1713                                 updateBlinkCounter = 300;
1714                                 updateButtonBlink();
1715                         }
1716                 }
1717
1718                 if(save)
1719                         saveLocalStorage('last_update_check', now.toString());
1720         });
1721 }
1722
1723 // ----------------------------------------------------------------------------
1724
1725 function finalizePage() {
1726         // resize all charts - without starting the background thread
1727         // this has to be done while NETDATA is paused
1728         // if we ommit this, the affix menu will be wrong, since all
1729         // the Dom elements are initially zero-sized
1730         NETDATA.parseDom();
1731
1732         // let it run (update the charts)
1733         NETDATA.unpause();
1734
1735         // check if we have to jump to a specific section
1736         var hash = location.hash.replace('#','');
1737         if(hash != '') {
1738                 // Clear the hash in the URL
1739                 // location.hash = '';   // delete front "//" if you want to change the address bar
1740                 var offset = $(location.hash).offset();
1741                 if(typeof offset !== 'undefined')
1742                         $('html, body').animate({ scrollTop: offset.top }, 0);
1743         }
1744
1745         /* activate bootstrap sidebar (affix) */
1746         $('#sidebar').affix({
1747                 offset: {
1748                         top: (document.location.hostname === demo_hostname)?150:0,
1749                         bottom: 0
1750                 }
1751         });
1752
1753         /* fix scrolling of very long affix lists
1754            http://stackoverflow.com/questions/21691585/bootstrap-3-1-0-affix-too-long
1755          */
1756         $('#sidebar').on('affixed.bs.affix', function() {
1757                 $(this).removeAttr('style');
1758         });
1759
1760         /* activate bootstrap scrollspy (needed for sidebar) */
1761         $(document.body).scrollspy({
1762                 target: '#sidebar',
1763                 offset: $(window).height() / 3 // controls the diff of the <hX> element to the top, to select it
1764         });
1765
1766         document.getElementById('footer').style.display = 'block';
1767
1768
1769         var update_options_modal = function() {
1770                 // console.log('update_options_modal');
1771
1772                 var sync_option = function(option) {
1773                         var self = $('#' + option);
1774
1775                         if(self.prop('checked') !== NETDATA.getOption(option)) {
1776                                 // console.log('switching ' + option.toString());
1777                                 self.bootstrapToggle(NETDATA.getOption(option)?'on':'off');
1778                         }
1779                 }
1780
1781                 var theme_sync_option = function(option) {
1782                         var self = $('#' + option);
1783
1784                         self.bootstrapToggle(netdataTheme === 'slate'?'on':'off');
1785                 }
1786
1787                 sync_option('eliminate_zero_dimensions');
1788                 sync_option('destroy_on_hide');
1789                 sync_option('parallel_refresher');
1790                 sync_option('concurrent_refreshes');
1791                 sync_option('sync_selection');
1792                 sync_option('sync_pan_and_zoom');
1793                 sync_option('stop_updates_when_focus_is_lost');
1794                 sync_option('smooth_plot');
1795                 sync_option('pan_and_zoom_data_padding');
1796                 theme_sync_option('netdata_theme_control');
1797
1798                 if(NETDATA.getOption('parallel_refresher') === false) {
1799                         $('#concurrent_refreshes_row').hide();
1800                 }
1801                 else {
1802                         $('#concurrent_refreshes_row').show();
1803                 }
1804         };
1805         NETDATA.setOption('setOptionCallback', update_options_modal);
1806
1807         // handle options changes
1808         $('#eliminate_zero_dimensions').change(function()       { NETDATA.setOption('eliminate_zero_dimensions', $(this).prop('checked')); });
1809         $('#destroy_on_hide').change(function()                 { NETDATA.setOption('destroy_on_hide', $(this).prop('checked')); });
1810         $('#parallel_refresher').change(function()              { NETDATA.setOption('parallel_refresher', $(this).prop('checked')); });
1811         $('#concurrent_refreshes').change(function()            { NETDATA.setOption('concurrent_refreshes', $(this).prop('checked')); });
1812         $('#sync_selection').change(function()                  { NETDATA.setOption('sync_selection', $(this).prop('checked')); });
1813         $('#sync_pan_and_zoom').change(function()               { NETDATA.setOption('sync_pan_and_zoom', $(this).prop('checked')); });
1814         $('#stop_updates_when_focus_is_lost').change(function() { NETDATA.setOption('stop_updates_when_focus_is_lost', $(this).prop('checked')); });
1815         $('#smooth_plot').change(function()                     { NETDATA.setOption('smooth_plot', $(this).prop('checked')); });
1816         $('#pan_and_zoom_data_padding').change(function()       { NETDATA.setOption('pan_and_zoom_data_padding', $(this).prop('checked')); });
1817
1818         // this has to be the last
1819         // it reloads the page
1820         $('#netdata_theme_control').change(function()           {
1821                 if(setTheme($(this).prop('checked')?'slate':'default'))
1822                         location.reload();
1823         });
1824
1825         if(document.location.hostname === demo_hostname) {
1826                 setTimeout(function() {
1827                         $('#welcomeModal').modal();
1828                 }, 1000);
1829         }
1830         else
1831                 notifyForUpdate();
1832
1833         $('#updateModal').on('shown.bs.modal', function() {
1834                 notifyForUpdate(true);
1835         })
1836 }
1837
1838 function resetDashboardOptions() {
1839         NETDATA.resetOptions();
1840         if(setTheme('slate'))
1841                 location.reload();
1842 }
1843
1844 downloadAllCharts();
1845
1846 </script>
1847
1848 </body>
1849 </html>