web/index.html

   1 <!DOCTYPE html>
   2 <html lang="en">
   3 <head>
   4         <title>netdata dashboard</title>
   5
   6         <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
   7         <meta charset="utf-8">
   8         <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
   9         <meta name="viewport" content="width=device-width, initial-scale=1">
  10         <meta name="apple-mobile-web-app-capable" content="yes">
  11         <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
  12         <meta name="author" content="costa@tsaousis.gr">
  13
  14         <link rel="shortcut icon" href="images/seo-performance-multi-size.ico">
  15
  16         <link rel="apple-touch-icon" href="images/seo-performance-72.png">
  17         <link rel="apple-touch-icon" sizes="72x72" href="images/seo-performance-72.png">
  18         <link rel="apple-touch-icon" sizes="114x114" href="images/seo-performance-114.png">
  19
  20         <link rel="icon" type="image/png" sizes="512x512" href="images/seo-performance-512.png">
  21         <link rel="icon" type="image/png" sizes="256x256" href="images/seo-performance-256.png">
  22         <link rel="icon" type="image/png" sizes="128x128" href="images/seo-performance-128.png">
  23         <link rel="icon" type="image/png" sizes="64x64" href="images/seo-performance-64.png">
  24         <link rel="icon" type="image/png" sizes="48x48" href="images/seo-performance-48.png">
  25         <link rel="icon" type="image/png" sizes="32x32" href="images/seo-performance-32.png">
  26         <link rel="icon" type="image/png" sizes="24x24" href="images/seo-performance-24.png">
  27         <link rel="icon" type="image/png" sizes="16x16" href="images/seo-performance-16.png">
  28
  29         <style>
  30
  31         /* prevent body from hidding under the navbar */
  32         body {
  33                 padding-top: 50px;
  34         }
  35
  36         .modal-wide .modal-dialog {
  37                 width: 80%;
  38         }
  39
  40         /* fix # anchors scrolling under the navbar
  41            https://github.com/twbs/bootstrap/issues/1768#issuecomment-46519033
  42          */
  43         h1 {
  44                 position: relative;
  45                 z-index: -1;
  46         }
  47         h2 {
  48                 position: relative;
  49                 z-index: -2;
  50         }
  51         h1:before, h2:before {
  52                 display: block;
  53                 content: " ";
  54                 margin-top: -70px;
  55                 height: 70px;
  56                 visibility: hidden;
  57         }
  58
  59         .p {
  60                 display: block;
  61                 margin-top: 15px;
  62         }
  63
  64         .option-row,
  65         .option-control {
  66                 vertical-align: top;
  67                 padding: 10px;
  68                 padding-top: 30px;
  69                 padding-left: 30px;
  70         }
  71
  72         .option-info {
  73                 padding: 10px;
  74         }
  75
  76         .chart-message {
  77                 display: block;
  78                 margin-top: 10px;
  79         }
  80
  81         .container {
  82                 width: 90% !important;
  83         }
  84
  85         #masthead h1 {
  86                 /*font-size: 30px;*/
  87                 line-height: 1;
  88                 padding-top: 30px;
  89         }
  90
  91         #masthead .well {
  92                 margin-top:4%;
  93         }
  94
  95         /* fix the navbar shifting when a modal is open */
  96         /* https://github.com/twbs/bootstrap/issues/14040#issuecomment-159891033 */
  97         body.modal-open{
  98                 width: 100% !important;
  99                 padding-right: 0 !important;
 100 /*              overflow-y: scroll !important; */
 101 /*              position: fixed !important;*/
 102                 overflow: visible;
 103         }
 104
 105         /*
 106          * Side navigation
 107          *
 108          * Scrollspy and affixed enhanced navigation to highlight sections and secondary
 109          * sections of docs content.
 110          */
 111
 112         .affix {
 113                 position: static;
 114                 top: 70px !important;
 115                 /*width: 220px;*/
 116         }
 117
 118         .affix-top {
 119                 /*width: 220px;*/
 120         }
 121
 122         .dashboard-sidebar {
 123                 max-height: calc(100% - 70px) !important;
 124                 overflow-y: auto;
 125                 /*width: 220px !important;*/
 126         }
 127
 128         /* By default it's not affixed in mobile views, so undo that */
 129         .dashboard-sidebar.affix {
 130                 position: static;
 131         }
 132
 133         @media (min-width: 768px) {
 134                 .dashboard-sidebar {
 135                         padding-left: 20px;
 136                 }
 137         }
 138
 139         /* First level of nav */
 140         .dashboard-sidenav {
 141                 margin-top: 20px;
 142                 margin-bottom: 20px;
 143         }
 144
 145         /* All levels of nav */
 146         .dashboard-sidebar .nav > li > a {
 147                 display: block;
 148                 padding: 4px 20px;
 149                 font-size: 13px;
 150                 font-weight: 500;
 151                 color: #767676;
 152         }
 153         .dashboard-sidebar .nav > li > a:hover,
 154         .dashboard-sidebar .nav > li > a:focus {
 155                 padding-left: 19px;
 156                 color: #563d7c;
 157                 text-decoration: none;
 158                 background-color: transparent;
 159                 border-left: 1px solid #563d7c;
 160         }
 161         .dashboard-sidebar .nav > .active > a,
 162         .dashboard-sidebar .nav > .active:hover > a,
 163         .dashboard-sidebar .nav > .active:focus > a {
 164                 padding-left: 18px;
 165                 font-weight: bold;
 166                 color: #563d7c;
 167                 background-color: transparent;
 168                 border-left: 2px solid #563d7c;
 169         }
 170
 171         /* Nav: second level (shown on .active) */
 172         .dashboard-sidebar .nav .nav {
 173                 display: none; /* Hide by default, but at >768px, show it */
 174                 padding-bottom: 10px;
 175         }
 176         .dashboard-sidebar .nav .nav > li > a {
 177                 padding-top: 1px;
 178                 padding-bottom: 1px;
 179                 padding-left: 30px;
 180                 font-size: 12px;
 181                 font-weight: normal;
 182         }
 183         .dashboard-sidebar .nav .nav > li > a:hover,
 184         .dashboard-sidebar .nav .nav > li > a:focus {
 185                 padding-left: 29px;
 186         }
 187         .dashboard-sidebar .nav .nav > .active > a,
 188         .dashboard-sidebar .nav .nav > .active:hover > a,
 189         .dashboard-sidebar .nav .nav > .active:focus > a {
 190                 padding-left: 28px;
 191                 font-weight: 500;
 192         }
 193
 194         /* Back to top (hidden on mobile) */
 195         .back-to-top,
 196         .dashboard-theme-toggle {
 197                 display: none;
 198                 padding: 4px 10px;
 199                 margin-top: 10px;
 200                 margin-left: 10px;
 201                 font-size: 12px;
 202                 font-weight: 500;
 203                 color: #999;
 204         }
 205         .back-to-top:hover,
 206         .dashboard-theme-toggle:hover {
 207                 color: #563d7c;
 208                 text-decoration: none;
 209         }
 210         .dashboard-theme-toggle {
 211                 margin-top: 0;
 212         }
 213
 214         @media (min-width: 768px) {
 215                 .back-to-top,
 216                 .dashboard-theme-toggle {
 217                         display: block;
 218                 }
 219
 220                 /* Widen the fixed sidebar */
 221                 .dashboard-sidebar.affix,
 222                 .dashboard-sidebar.affix-top,
 223                 .dashboard-sidebar.affix-bottom {
 224                         width: 200px !important;
 225                 }
 226
 227                 .dashboard-sidebar.affix {
 228                         position: fixed; /* Undo the static from mobile first approach */
 229                         top: 20px;
 230                 }
 231
 232                 .dashboard-sidebar.affix-bottom {
 233                         position: absolute; /* Undo the static from mobile first approach */
 234                 }
 235
 236                 .dashboard-sidebar.affix-bottom .dashboard-sidenav,
 237                 .dashboard-sidebar.affix .dashboard-sidenav {
 238                         margin-top: 0;
 239                         margin-bottom: 0;
 240                 }
 241         }
 242
 243         /* Show and affix the side nav when space allows it */
 244         @media (min-width: 992px) {
 245                 .dashboard-sidebar .nav > .active > ul {
 246                         display: block;
 247                 }
 248
 249                 /* Widen the fixed sidebar */
 250                 .dashboard-sidebar.affix,
 251                 .dashboard-sidebar.affix-top,
 252                 .dashboard-sidebar.affix-bottom {
 253                         width: 200px !important;
 254                 }
 255                 .dashboard-sidebar.affix {
 256                         position: fixed; /* Undo the static from mobile first approach */
 257                         top: 20px;
 258                 }
 259                 .dashboard-sidebar.affix-bottom {
 260                         position: absolute; /* Undo the static from mobile first approach */
 261                 }
 262                 .dashboard-sidebar.affix-bottom .dashboard-sidenav,
 263                 .dashboard-sidebar.affix .dashboard-sidenav {
 264                         margin-top: 0;
 265                         margin-bottom: 0;
 266                 }
 267         }
 268
 269         @media (min-width: 1200px) {
 270                 /* Widen the fixed sidebar again */
 271                 .dashboard-sidebar.affix-bottom,
 272                 .dashboard-sidebar.affix-top,
 273                 .dashboard-sidebar.affix {
 274                         width: 263px;
 275                 }
 276         }
 277         </style>
 278
 279         <!-- you can set your netdata server globally, by ucommenting this -->
 280         <!-- you can also give a different server per chart, with the attribute: data-host="http://netdata.server:19999" -->
 281         <!-- <script> netdataServer = "http://box:19999"; </script> -->
 282
 283         <!-- check which theme to use -->
 284         <script>
 285                 function loadLocalStorage(name) {
 286                         var ret = null;
 287
 288                         try {
 289                                 if(typeof Storage !== "undefined" && typeof localStorage === 'object')
 290                                         ret = localStorage.getItem(name);
 291                         }
 292                         catch(error) {
 293                                 ;
 294                         }
 295
 296                         if(typeof ret === 'undefined' || ret === null)
 297                                 return null;
 298
 299                         return ret;
 300                 }
 301
 302                 function saveLocalStorage(name, value) {
 303                         try {
 304                                 if(typeof Storage !== "undefined" && typeof localStorage === 'object') {
 305                                         localStorage.setItem(name, value.toString());
 306                                         return true;
 307                                 }
 308                         }
 309                         catch(error) {
 310                                 ;
 311                         }
 312
 313                         return false;
 314                 }
 315
 316                 function getTheme(def) {
 317                         var ret = loadLocalStorage('netdataTheme');
 318                         if(typeof ret === 'undefined' || ret === null || ret === 'undefined')
 319                                 return def;
 320                         else
 321                                 return ret;
 322                 }
 323                 var netdataTheme = getTheme('slate');
 324
 325                 function setTheme(theme) {
 326                         if(theme === netdataTheme) return false;
 327
 328                         return saveLocalStorage('netdataTheme', theme);
 329                 }
 330         </script>
 331
 332         <!-- load the dashboard manager - it will do the rest -->
 333         <script type="text/javascript" src="dashboard.js?v26"></script>
 334 </head>
 335
 336 <body data-spy="scroll" data-target="#sidebar">
 337         <nav class="navbar navbar-default navbar-fixed-top" role="banner">
 338                 <div class="container">
 339                         <div class="navbar-header">
 340                                 <button class="navbar-toggle" type="button" data-toggle="collapse" data-target=".navbar-collapse">
 341                                         <span class="sr-only">Toggle navigation</span>
 342                                         <span class="icon-bar"></span>
 343                                         <span class="icon-bar"></span>
 344                                         <span class="icon-bar"></span>
 345                                 </button>
 346                                 <a href="/" class="navbar-brand" id="hostname">netdata</a>
 347                         </div>
 348                         <nav class="collapse navbar-collapse navbar-right" role="navigation">
 349                                 <ul class="nav navbar-nav">
 350                                         <li><a href="#" class="btn" data-toggle="modal" data-target="#optionsModal"><i class="fa fa-cog"></i> settings</a></li>
 351                                         <li><a href="https://github.com/firehol/netdata/wiki" class="btn" target="_blank"><i class="fa fa-github"></i> community</a></li>
 352                                         <li id="updateButton"><a href="#" class="btn" data-toggle="modal" data-target="#updateModal"><i class="fa fa-cloud-download"></i> update</a></li>
 353 <!--                                    <li><a href="old/" class="btn" target="_blank"><i class="fa fa-step-backward"></i> old dashboard</a></li> -->
 354                                         <li><a href="#" class="btn" data-toggle="modal" data-target="#helpModal"><i class="fa fa-question-circle"></i> help</a></li>
 355 <!--                                    <li><a href="#sec">Visualize</a></li>
 356                                         <li><a href="#sec">Prototype</a></li>
 357 -->                             </ul>
 358                         </nav>
 359                 </div>
 360         </nav>
 361
 362         <div id="masthead" style="display: none;">
 363                 <div class="container">
 364                         <div class="row">
 365                                 <div class="col-md-7">
 366                                         <h1>Netdata
 367                                                 <p class="lead">Real-time performance monitoring, in the greatest possible detail</p>
 368                                         </h1>
 369                                 </div>
 370                                 <div class="col-md-5">
 371                                         <div class="well well-lg">
 372                                                 <div class="row">
 373                                                 <div class="col-md-6">
 374                                                         <b>Drag</b> charts to pan.
 375                                                         <b>Shift + wheel</b> on them, to zoom in and out.
 376                                                         <b>Double-click</b> on them, to reset.
 377                                                         <b>Hover</b> on them too!
 378                                                         </div>
 379                                                 <div class="col-md-6">
 380                                                         <div data-netdata="system.intr" data-chart-library="dygraph" data-dygraph-theme="sparkline" data-dygraph-type="line" data-dygraph-strokewidth="3" data-dygraph-smooth="true" data-dygraph-highlightcirclesize="6" data-after="-90" data-height="60px" data-colors="#C66"></div>
 381                                                         </div>
 382                                                 </div>
 383                                         </div>
 384                                 </div>
 385                         </div>
 386                 </div>
 387         </div>
 388
 389         <div class="container">
 390                 <div class="row">
 391                         <div class="col-md-10" role="main">
 392                                 <div id="charts_div"></div>
 393                         </div>
 394                         <div class="col-md-2" role="complementary">
 395                                 <nav class="dashboard-sidebar hidden-print hidden-xs hidden-sm" id="sidebar" role="menu"></nav>
 396                         </div>
 397                 </div>
 398         </div>
 399
 400         <div id="footer" class="container" style="display: none;">
 401                 <div class="row">
 402                         <div class="col-md-10" role="main">
 403                                 <div class="p">
 404                                         <big><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></big><br/>
 405                                         <i class="fa fa-copyright"></i> Copyright 2016, Costa Tsaousis.<br/>
 406                                         Released under <a href="http://www.gnu.org/licenses/gpl-3.0.en.html" target="_blank">GPL v3 or later</a>.<br/>
 407                                 </div>
 408                                 <div class="p">
 409                                         <small>
 410                                                 <a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a> re-distributes these software tools:
 411
 412                                                 <i class="fa fa-circle"></i> The excellent <a href="http://dygraphs.com/" target="_blank">Dygraphs.com</a> web chart library,
 413                                                 <i class="fa fa-copyright"></i> Copyright 2009, Dan Vanderkam, <a href="http://dygraphs.com/legal.html" target="_blank">MIT License</a>
 414
 415                                                 <i class="fa fa-circle"></i> <a href="http://omnipotent.net/jquery.sparkline/" target="_blank">jQuery Sparklines</a> web chart library,
 416                                                 <i class="fa fa-copyright"></i> Copyright 2009-2012, Splunk Inc., <a href="http://opensource.org/licenses/BSD-3-Clause" target="_blank">New BSD License</a>
 417
 418                                                 <i class="fa fa-circle"></i> <a href="http://benpickles.github.io/peity/" target="_blank">Peity</a> web chart library,
 419                                                 <i class="fa fa-copyright"></i> Copyright 2009-2015, Ben Pickles, <a href="https://github.com/benpickles/peity/blob/master/MIT-LICENCE" target="_blank">MIT License</a>
 420
 421                                                 <i class="fa fa-circle"></i> <a href="https://rendro.github.io/easy-pie-chart/" target="_blank">Easy Pie Chart</a> web chart library,
 422                                                 <i class="fa fa-copyright"></i> Copyright 2013, Robert Fleischmann, <a href="https://github.com/rendro/easy-pie-chart/blob/master/LICENSE" target="_blank">MIT License</a>
 423
 424                                                 <i class="fa fa-circle"></i> <a href="http://bernii.github.io/gauge.js/" target="_blank">Gauge.js</a> web chart library,
 425                                                 <i class="fa fa-copyright"></i> Copyright, Bernard Kobos, <a href="http://bernii.github.io/gauge.js/" target="_blank">MIT License</a>
 426
 427                                                 <i class="fa fa-circle"></i> <a href="https://jquery.org/" target="_blank">jQuery</a>,
 428                                                 <i class="fa fa-copyright"></i> Copyright 2015, jQuery Foundation, <a href="https://jquery.org/license/" target="_blank">MIT License</a>
 429
 430                                                 <i class="fa fa-circle"></i> <a href="http://getbootstrap.com/getting-started/" target="_blank">Bootstrap</a>,
 431                                                 <i class="fa fa-copyright"></i> Copyright 2015, Twitter, <a href="http://getbootstrap.com/getting-started/#license-faqs" target="_blank">MIT License</a>
 432
 433                                                 <i class="fa fa-circle"></i> <a href="http://www.bootstraptoggle.com/" target="_blank">Bootstrap Toggle</a>,
 434                                                 <i class="fa fa-copyright"></i> Copyright (c) 2011-2014 Min Hur, The New York Times Company, <a href="https://github.com/minhur/bootstrap-toggle/blob/master/LICENSE" target="_blank">MIT License</a>
 435
 436                                                 <i class="fa fa-circle"></i> <a href="https://jamesflorentino.github.io/nanoScrollerJS/" target="_blank">NanoScroller</a>,
 437                                                 <i class="fa fa-copyright"></i> Copyright 2012, James Florentino, <a href="https://github.com/jamesflorentino/nanoScrollerJS/blob/master/LICENSE" target="_blank">MIT License</a>
 438
 439                                                 <i class="fa fa-circle"></i> <a href="https://github.com/marcj/css-element-queries" target="_blank">CSS Element Queries</a>,
 440                                                 <i class="fa fa-copyright"></i> Copyright Marc J. Schmidt, <a href="https://github.com/marcj/css-element-queries/blob/master/LICENSE" target="_blank">MIT License</a>
 441
 442                                                 <i class="fa fa-circle"></i> <a href="https://fortawesome.github.io/Font-Awesome/" target="_blank">FontAwesome</a>,
 443                                                 <i class="fa fa-copyright"></i> Created by Dave Gandy, Font: <a href="http://scripts.sil.org/OFL" target="_blank">SIL OFL 1.1 License</a>, CSS: <a href="http://opensource.org/licenses/mit-license.html" target="_blank">MIT License</a>
 444
 445                                                 <i class="fa fa-circle"></i> <a href="http://www.iconsdb.com/soylent-red-icons/seo-performance-icon.html" target="_blank">IconsDB.com Icons</a>, Icons provided as CC0 1.0 Universal (CC0 1.0) Public Domain Dedication.
 446
 447                                                 <i class="fa fa-circle"></i> <a href="http://morrisjs.github.io/morris.js/" target="_blank">morris.js</a>,
 448                                                 <i class="fa fa-copyright"></i> Copyright 2013, Olly Smith, <a href="http://morrisjs.github.io/morris.js/" target="_blank">Simplified BSD License</a>
 449
 450                                                 <i class="fa fa-circle"></i> <a href="http://raphaeljs.com/" target="_blank">Raphaël</a>,
 451                                                 <i class="fa fa-copyright"></i> Copyright 2008, Dmitry Baranovskiy, <a href="http://raphaeljs.com/license.html" target="_blank">MIT License</a>
 452
 453                                                 <i class="fa fa-circle"></i> <a href="http://C3js.org/" target="_blank">C3</a>,
 454                                                 <i class="fa fa-copyright"></i> Copyright 2013, Masayuki Tanaka, <a href="https://github.com/masayuki0812/c3/blob/master/LICENSE" target="_blank">MIT License</a>
 455
 456                                                 <i class="fa fa-circle"></i> <a href="http://D3js.org/" target="_blank">D3</a>,
 457                                                 <i class="fa fa-copyright"></i> Copyright 2015, Mike Bostock, <a href="http://opensource.org/licenses/BSD-3-Clause" target="_blank">BSD License</a>
 458
 459                                                 <i class="fa fa-circle"></i> <a href="https://github.com/broofa/node-int64" target="_blank">node-int64</a>,
 460                                                 <i class="fa fa-copyright"></i> Copyright 2014, Robert Kieffer, <a href="https://github.com/broofa/node-int64/blob/master/LICENSE" target="_blank">MIT License</a>
 461
 462                                         </small>
 463                                 </div>
 464                         </div>
 465                 </div>
 466         </div>
 467
 468         <div class="modal fade" id="welcomeModal" tabindex="-1" role="dialog" aria-labelledby="welcomeModalLabel">
 469                 <div class="modal-dialog modal-lg" role="document">
 470                         <div class="modal-content">
 471                                 <div class="modal-header">
 472                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 473                                         <h4 class="modal-title" id="welcomeModalLabel">Welcome!</h4>
 474                                 </div>
 475                                 <div class="modal-body">
 476                                                 <div class="p">
 477                                                 <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> is the fastest way to visualize metrics. It is a resource efficient, highly optimized system for collecting and visualizing any type of realtime timeseries data, from CPU usage, disk activity, SQL queries, API calls, web site visitors, etc.
 478                                                 </div>
 479                                                 <div class="p">
 480                                                 <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> tries to visualize the truth of <b>now</b>, in its <b>greatest detail</b>, so that you can get insights of what is happening now and what just happened, on your systems and applications.
 481                                                 </div>
 482                                                 <div class="p">
 483                                                 To make a chart in <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b>, you just need a <b>number</b>. Just a number you can read somehow. <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> will turn this number to a real time, interactive, web chart. For collecting these numbers, it supports <a href="https://github.com/firehol/netdata/wiki/External-Plugins" target="_blank">external plugins</a>, even <a href="https://github.com/firehol/netdata/wiki/General-Info---charts.d" target="_blank">shell</a> or <a href="https://github.com/firehol/netdata/wiki/General-Info---charts.d" target="_blank">node.js</a> plugins. Any computer program, in any language, that can print a few lines of text on its standard output, can be a netdata data collector.
 484                                                 </div>
 485                                                 <div class="p">
 486                                                 <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> can embed charts everywhere, like this one <div data-netdata="system.cpu" data-dimensions="system" data-after="-120" data-width="25%" data-height="15px" data-chart-library="dygraph" data-dygraph-theme="sparkline" data-show-value-of-system-at="system.cpu.system.modal.1"></div> (my CPU system usage which is <span id="system.cpu.system.modal.1" style="display: inline-block; width: 40px; text-align: right;"></span>%),
 487                                                 or this one <div data-netdata="ipv4.tcppackets" data-dimensions="received" data-after="-120" data-width="25%" data-height="15px" data-chart-library="dygraph" data-dygraph-theme="sparkline" data-show-value-of-received-at="ipv4.tcppackets.received.modal.1"></div> (my IPv4 received TCP packets, which are <span id="ipv4.tcppackets.received.modal.1" style="display: inline-block; width: 60px; text-align: right;"></span>/second).
 488                                                 </div>
 489                                                 <div class="p">
 490                                                 You can have <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> charts on your site too. Just give it a <code>div</code> and a real time chart, zoomable and draggable will appear (try it even on these tiny ones - <b>drag</b> them to pan horizontally, <b>shift + drag</b> to zoom in, on <b>chrome shift + mouse wheel</b> to zoom in/out, <b>double click</b> on them to reset them - don't be afraid of <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> performance - <a href="https://github.com/firehol/netdata/wiki/Performance" target="_blank">a raspberry pi 2 can sustain 300 charts updates per second</a>!).
 491                                                 </div>
 492                                                 <div class="p">
 493                                                 For more information please refer to the <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata wiki</a></b>.
 494                                                 </div>
 495                                 </div>
 496                                 <div class="modal-footer">
 497                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 498                                 </div>
 499                         </div>
 500                 </div>
 501         </div>
 502
 503         <div class="modal fade" id="helpModal" tabindex="-1" role="dialog" aria-labelledby="helpModalLabel">
 504                 <div class="modal-dialog modal-lg" role="document">
 505                         <div class="modal-content">
 506                                 <div class="modal-header">
 507                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 508                                         <h4 class="modal-title" id="helpModalLabel">Dashboard Help</h4>
 509                                 </div>
 510                                 <div class="modal-body">
 511
 512                                         <h4>Dygraphs (line, area and stacked area charts)</h4>
 513
 514                                         <!-- Nav tabs -->
 515                                         <ul class="nav nav-tabs" role="tablist">
 516                                                 <li role="presentation" class="active"><a href="#help_mouse" aria-controls="help_mouse" role="tab" data-toggle="tab">Mouse Interface</a></li>
 517                                                 <li role="presentation"><a href="#help_touch" aria-controls="help_touch" role="tab" data-toggle="tab">Touch Interface</a></li>
 518                                         </ul>
 519
 520                                         <!-- Tab panes -->
 521                                         <div class="tab-content">
 522                                                 <div role="tabpanel" class="tab-pane active" id="help_mouse">
 523                                                         <div class="p">
 524                                                                 <h4>Mouse Over / Hover</h4>
 525                                                                 Mouse over on a chart to show, at its legend, the values for the timestamp under the mouse (the chart will also highlight the point at the chart).
 526                                                                 <br/>
 527                                                                 All the other visible charts will also show and highlight their values for the same timestamp.
 528                                                         </div>
 529                                                         <hr/>
 530                                                         <div class="p">
 531                                                                 <h4>Drag Chart Contents</h4>
 532                                                                 Drag the contents of a chart to pan it horizontally.
 533                                                                 <br/>
 534                                                                 All the charts will follow soon after you let the chart alone (this little delay is by design: it speeds up your browser and lets you focus on what you are exploring).
 535                                                                 <br/>
 536                                                                 Once a chart is panned, auto refreshing stops for all charts. To enable it again, <b>double click</b> a panned chart.
 537                                                         </div>
 538                                                         <hr/>
 539                                                         <div class="p">
 540                                                                 <h4>Double Click</h4>
 541                                                                 Double Click a chart to reset all the charts to their default auto-refreshing state.
 542                                                         </div>
 543                                                         <hr/>
 544                                                         <div class="p">
 545                                                                 <h4>SHIFT + Drag</h4>
 546                                                                 While pressing the shift key, click on the contents of a chart and move the mouse to select an area, to zoom in. The other charts will follow too. Zooming is performed in two phases:
 547                                                                 <ul>
 548                                                                         <li>The already loaded chart contents are zoomed (low resolution)</li>
 549                                                                         <li>New data are transfered from the netdata server, to refresh the chart with possibly more detail.</li>
 550                                                                 </ul>
 551                                                                 Once a chart is zoomed, auto refreshing stops for all charts. To enable it again, <b>double click</b> a zoomed chart.
 552                                                         </div>
 553                                                         <hr/>
 554                                                         <div class="p">
 555                                                                 <h4>SHIFT + Mouse Wheel <small>(does not work on firefox and IE/Edge)</small></h4>
 556                                                                 While pressing the shift key and the mouse pointer is over the contents of a chart, scroll the mouse wheel to zoom in or out. This kind of zooming is aligned to center below the mouse pointer. The other charts will follow too.
 557                                                                 <br/>
 558                                                                 Once a chart is zoomed, auto refreshing stops for all charts. To enable it again, <b>double click</b> a zoomed chart.
 559                                                         </div>
 560                                                         <hr/>
 561                                                         <div class="p">
 562                                                                 <h4>Legend Operations</h4>
 563                                                                 Click on the label or value of a dimension, will select / unselect this dimension.
 564                                                                 <br/>
 565                                                                 You can press any of the SHIFT or CONTROL keys and then click on legend labels or values, to select / unselect multiple dimensions.
 566                                                         </div>
 567                                                 </div>
 568                                                 <div role="tabpanel" class="tab-pane" id="help_touch">
 569                                                         <div class="p">
 570                                                                 <h4>Single Tap</h4>
 571                                                                 Single Tap on the contents of a chart to show, at its legend, the values for the timestamp tapped (the chart will also highlight the point at the chart).
 572                                                                 <br/>
 573                                                                 All the other visible charts will also show and highlight their values for the same timestamp.
 574                                                         </div>
 575                                                         <hr/>
 576                                                         <div class="p">
 577                                                                 <h4>Drag Chart Contents</h4>
 578                                                                 Touch and Drag the contents of a chart to pan it horizontally.
 579                                                                 <br/>
 580                                                                 All the charts will follow soon after you let the chart alone (this little delay is by design: it speeds up your browser and lets you focus on what you are exploring).
 581                                                                 <br/>
 582                                                                 Once a chart is panned, auto refreshing stops for all charts. To enable it again, <b>double tap</b> a panned chart.
 583                                                         </div>
 584                                                         <hr/>
 585                                                         <div class="p">
 586                                                                 <h4>Double Tap</h4>
 587                                                                 Double tap a chart to reset all the charts to their default auto-refreshing state.
 588                                                         </div>
 589                                                         <hr/>
 590                                                         <div class="p">
 591                                                                 <h4>Zoom <small>(does not work on firefox and IE/Edge)</small></h4>
 592                                                                 With two fingers, zoom in or out.
 593                                                                 <br/>
 594                                                                 Once a chart is zoomed, auto refreshing stops for all charts. To enable it again, <b>double click</b> a zoomed chart.
 595                                                         </div>
 596                                                         <hr/>
 597                                                         <div class="p">
 598                                                                 <h4>Legend Operations</h4>
 599                                                                 Tap on the label or value of a dimension, will select / unselect this dimension.
 600                                                         </div>
 601                                                 </div>
 602                                         </div>
 603                                 </div>
 604                                 <div class="modal-footer">
 605                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 606                                 </div>
 607                         </div>
 608                 </div>
 609         </div>
 610
 611         <div class="modal fade" id="optionsModal" tabindex="-1" role="dialog" aria-labelledby="optionsModalLabel">
 612                 <div class="modal-dialog modal-lg" role="document">
 613                         <div class="modal-content">
 614                                 <div class="modal-header">
 615                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 616                                         <h4 class="modal-title" id="optionsModalLabel">netdata dashboard options</h4>
 617                                 </div>
 618                                 <div class="modal-body">
 619                                         <center>
 620                                                 <small style="color: #BBBBBB;">These are browser settings. Each viewer has its own. They do not affect the operation of your netdata server.
 621                                                 <br/>
 622                                                 Settings take effect immediately and are saved permanently to browser local storage (except the refresh on focus / always option).
 623                                                 <br/>
 624                                                 To reset all options (including charts sizes) to their defaults, click <a href="#" onclick="resetDashboardOptions(); return false;">here</a>.</small>
 625                                         </center>
 626                                         <div style="padding: 10px;"></div>
 627
 628                                         <!-- Nav tabs -->
 629                                         <ul class="nav nav-tabs" role="tablist">
 630                                                 <li role="presentation" class="active"><a href="#settings_performance" aria-controls="settings_performance" role="tab" data-toggle="tab">Performance</a></li>
 631                                                 <li role="presentation"><a href="#settings_sync" aria-controls="settings_sync" role="tab" data-toggle="tab">Synchronization</a></li>
 632                                                 <li role="presentation"><a href="#settings_visual" aria-controls="settings_visual" role="tab" data-toggle="tab">Visual</a></li>
 633                                         </ul>
 634
 635                                         <!-- Tab panes -->
 636                                         <div class="tab-content">
 637                                                 <div role="tabpanel" class="tab-pane active" id="settings_performance">
 638                                                         <form id="optionsForm1" method="get" class="form-horizontal">
 639                                                                 <div class="form-group">
 640                                                                         <table>
 641                                                                         <tr class="option-row">
 642                                                                                 <td class="option-control"><input id="stop_updates_when_focus_is_lost" type="checkbox" checked data-toggle="toggle" data-offstyle="danger" data-onstyle="success" data-on="On Focus" data-off="Always" data-width="110px"></td>
 643                                                                                 <td class="option-info"><strong>When to refresh the charts?</strong><br/>
 644                                                                                         <small>When set to <b>On Focus</b>, the charts will stop being updated if the page / tab does not have the focus of the user. When set to <b>Always</b>, the charts will always be refreshed. Set it to <b>On Focus</b> it to lower the CPU requirements of the browser (and extend the battery of laptops and tablets) when this page does not have your focus. Set to <b>Always</b> to work on another window (i.e. change the settings of something) and have the charts auto-refresh in this window.</small>
 645                                                                                 </td>
 646                                                                                 </tr>
 647                                                                         <tr class="option-row">
 648                                                                                 <td class="option-control">
 649                                                                                 <input id="eliminate_zero_dimensions" type="checkbox" checked data-toggle="toggle" data-on="Non Zero" data-off="All" data-width="110px">
 650                                                                                 </td>
 651                                                                                 <td class="option-info"><strong>Which dimensions to show?</strong><br/>
 652                                                                                         <small>When set to <b>Non Zero</b>, dimensions that have all their values (within the current view) set to zero will not be transfered from the netdata server (except if all dimensions of the chart are zero, in which case this setting does nothing - all dimensions are transfered and shown). When set to <b>All</b>, all dimensions will always be shown. Set it to <b>Non Zero</b> to lower the data transfered between netdata and your browser, lower the CPU requirements of your browser (fewer lines to draw) and increase the focus on the legends (fewer entries at the legends).</small>
 653                                                                                 </td>
 654                                                                                 </tr>
 655                                                                         <tr class="option-row">
 656                                                                                 <td class="option-control"><input id="destroy_on_hide" type="checkbox" data-toggle="toggle" data-on="Destroy" data-off="Hide" data-width="110px"></td>
 657                                                                                 <td class="option-info"><strong>How to handle hidden charts?</strong><br/>
 658                                                                                         <small>When set to <b>Destroy</b>, charts that are not in the current viewport of the browser (are above, or below the visible area of the page), will be destroyed and re-created if and when they become visible again. When set to <b>Hide</b>, the not-visible charts will be just hidden, to simplify the DOM and speed up your browser. Set it to <b>Destroy</b>, to lower the memory requirements of your browser. Set it to <b>Hide</b> for smoother page scrolling.</small>
 659                                                                                 </td>
 660                                                                                 </tr>
 661                                                                         </table>
 662                                                                 </div>
 663                                                         </form>
 664                                                 </div>
 665                                                 <div role="tabpanel" class="tab-pane" id="settings_sync">
 666                                                         <form id="optionsForm2" method="get" class="form-horizontal">
 667                                                                 <div class="form-group">
 668                                                                         <table>
 669                                                                         <tr class="option-row">
 670                                                                                 <td class="option-control"><input id="parallel_refresher" type="checkbox" checked data-toggle="toggle" data-on="Parallel" data-off="Sequencial" data-width="110px"></td>
 671                                                                                 <td class="option-info"><strong>Which chart refresh policy to use?</strong><br/>
 672                                                                                         <small>When set to <b>parallel</b>, visible charts are refreshed in parallel (all queries are sent to netdata server in parallel) and are rendered asynchronously. When set to <b>sequencial</b> charts are refreshed one after another. Set it to parallel if your browser can cope with it (most modern browsers do), set it to sequencial if you work on an older/slower computer.</small>
 673                                                                                 </td>
 674                                                                                 </tr>
 675                                                                         <tr class="option-row" id="concurrent_refreshes_row">
 676                                                                                 <td class="option-control"></td>
 677                                                                                 <td class="option-info">
 678                                                                                         <table>
 679                                                                                         <tr class="option-row">
 680                                                                                         <td class="option-control">
 681                                                                                         <input id="concurrent_refreshes" type="checkbox" checked data-toggle="toggle" data-on="Resync" data-off="Best Effort" data-width="110px">
 682                                                                                         </td>
 683                                                                                         <td class="option-info">
 684                                                                                         <strong>Shall we re-sync chart refreshes?</strong><br/>
 685                                                                                         <small>When set to <b>Resync</b>, the dashboard will attempt to re-synchronize all the charts so that they are refreshed concurrently. When set to <b>Best Effort</b>, each chart may be refreshed with a little time difference to the others. Normally, the dashboard starts refreshing them in parallel, but depending on the speed of your computer and the network latencies, charts start having a slight time difference. Setting this to <b>Resync</b> will attempt to re-synchronize the charts on every update. Setting it to <b>Best Effort</b> may lower the pressure on your browser and the network.</small>
 686                                                                                         </td>
 687                                                                                         </tr>
 688                                                                                         </table>
 689                                                                                 </td>
 690                                                                                 </tr>
 691                                                                         <tr class="option-row">
 692                                                                                 <td class="option-control"><input id="sync_selection" type="checkbox" checked data-toggle="toggle" data-on="Sync" data-off="Don't Sync" data-onstyle="success" data-offstyle="danger" data-width="110px"></td>
 693                                                                                 <td class="option-info"><strong>Sync hover selection on all charts?</strong><br/>
 694                                                                                         <small>When enabled, a selection on one chart will automatically select the same time on all other visible charts and the legends of all visible charts will be updated to show the selected values. When disabled, only the chart getting the user's attention will be selected. Enable it to get better insights of the data. Disable it if you are on a very slow computer that cannot actually do it.</small>
 695                                                                                 </td>
 696                                                                                 </tr>
 697                                                                         <tr class="option-row">
 698                                                                                 <td class="option-control"><input id="sync_pan_and_zoom" type="checkbox" checked data-toggle="toggle"  data-on="Sync" data-off="Don't Sync" data-onstyle="success" data-offstyle="danger" data-width="110px"></td>
 699                                                                                 <td class="option-info"><strong>Sync pan and zoom on all charts?</strong><br/>
 700                                                                                         <small>When enabled, pan and zoom operations on a chart will be replicated to all charts (even the ones that are not currently visible - of course only when they will become visible). When disabled, pan and zoom operations will not be propagated to other charts.</small>
 701                                                                                 </td>
 702                                                                                 </tr>
 703                                                                         </table>
 704                                                                 </div>
 705                                                         </form>
 706                                                 </div>
 707                                                 <div role="tabpanel" class="tab-pane" id="settings_visual">
 708                                                         <form id="optionsForm3" method="get" class="form-horizontal">
 709                                                                 <div class="form-group">
 710                                                                         <table>
 711                                                                         <tr class="option-row">
 712                                                                                 <td class="option-control"><input id="netdata_theme_control" type="checkbox" checked data-toggle="toggle" data-offstyle="danger" data-onstyle="success" data-on="Dark" data-off="White" data-width="110px"></td>
 713                                                                                 <td class="option-info"><strong>Which theme to use?</strong><br/>
 714                                                                                         <small>Netdata comes with two themes: <b>Dark</b> (the default) and <b>White</b>.</small>
 715                                                                                 </td>
 716                                                                                 </tr>
 717                                                                         <tr class="option-row">
 718                                                                                 <td class="option-control"><input id="pan_and_zoom_data_padding" type="checkbox" checked data-toggle="toggle"  data-on="Pad" data-off="Don't Pad" data-width="110px"></td>
 719                                                                                 <td class="option-info"><strong>Enable data padding when panning and zooming?</strong><br/>
 720                                                                                         <small>When set to <b>Pad</b> the charts will be padded with more data, both before and after the visible area, thus giving the impression the whole database is loaded. This padding will happen only after the first pan or zoom operation on the chart (initially all charts have only the visible data). When set to <b>Don't Pad</b> only the visible data will be transfered from the netdata server, even after the first pan and zoom operation.</small>
 721                                                                                 </td>
 722                                                                                 </tr>
 723                                                                         <tr class="option-row">
 724                                                                                 <td class="option-control"><input id="smooth_plot" type="checkbox" checked data-toggle="toggle"  data-on="Smooth" data-off="Rough" data-width="110px"></td>
 725                                                                                 <td class="option-info"><strong>Enable Bézier lines on charts?</strong><br/>
 726                                                                                         <small>When set to <b>Smooth</b> the charts libraries that support it, will plot smooth curves instead of simple straight lines to connect the points.</small>
 727                                                                                 </td>
 728                                                                                 </tr>
 729                                                                         </table>
 730                                                                 </div>
 731                                                         </form>
 732                                                 </div>
 733                                         </div>
 734                                 </div>
 735                                 <div class="modal-footer">
 736                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 737                                 </div>
 738                         </div>
 739                 </div>
 740         </div>
 741
 742
 743         <div class="modal fade" id="updateModal" tabindex="-1" role="dialog" aria-labelledby="updateModalLabel">
 744                 <div class="modal-dialog" role="document">
 745                         <div class="modal-content">
 746                                 <div class="modal-header">
 747                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 748                                         <h4 class="modal-title" id="updateModalLabel">Update Check</h4>
 749                                 </div>
 750                                 <div class="modal-body">
 751                                         Your netdata version: <b><code><span id="netdataVersion">Unknown</span></code></b>
 752                                         <br/>
 753                                         <div style="padding: 10px;"></div>
 754                                         <div id="versionCheckLog">Not checked yet. Please press the Check Now button.</div>
 755                                 </div>
 756                                 <div class="modal-footer">
 757                                         <a href="#" onclick="notifyForUpdate(true);" type="button" class="btn btn-default">Check Now</a>
 758                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 759                                 </div>
 760                         </div>
 761                 </div>
 762         </div>
 763
 764 <script>
 765
 766 var demo_hostname = 'netdata.firehol.org';
 767 // var demo_hostname = 'box';
 768
 769 if(document.location.hostname === demo_hostname) {
 770         document.getElementById('masthead').style.display = 'block';
 771 }
 772
 773 var options = {
 774         sparklines_registry: {},
 775         submenu_names: {},
 776         data: null,
 777         hostname: 'netdata_server', // will be overwritten by the netdata server
 778         categories: new Array(),
 779         categories_idx: {},
 780         families: new Array(),
 781         families_idx: {},
 782
 783         chartsPerRow: 0,
 784         chartsMinWidth: 1450,
 785         chartsHeight: 180,
 786         sparklinesHeight: 60
 787 };
 788
 789 // generate a sparkline
 790 // used in the documentation
 791 function sparkline(chart, dimension, units) {
 792         var key = chart + '.' + dimension;
 793
 794         if(typeof units === 'undefined')
 795                 units = '';
 796
 797         if(typeof options.sparklines_registry[key] === 'undefined')
 798                 options.sparklines_registry[key] = { count: 1 };
 799         else
 800                 options.sparklines_registry[key].count++;
 801
 802         key = key + '.' + options.sparklines_registry[key].count;
 803
 804         var h = '<div data-netdata="' + chart + '" data-after="-120" data-width="25%" data-height="15px" data-chart-library="dygraph" data-dygraph-theme="sparkline" data-dimensions="' + dimension + '" data-show-value-of-' + dimension + '-at="' + key + '"></div> (<span id="' + key + '" style="display: inline-block; min-width: 50px; text-align: right;">X</span>' + units + ')';
 805
 806         return h;
 807 }
 808
 809 function chartsPerRow(total) {
 810         if(options.chartsPerRow === 0) {
 811                 width = Math.floor(total / options.chartsMinWidth);
 812                 if(width === 0) width = 1;
 813                 return width;
 814         }
 815         else return options.chartsPerRow;
 816 }
 817
 818 function prioritySort(a, b) {
 819         if(a.priority < b.priority) return -1;
 820         if(a.priority > b.priority) return 1;
 821         if(a.name < b.name) return -1;
 822         return 1;
 823 }
 824
 825 function sortObjectByPriority(object) {
 826         var idx = {};
 827         var sorted = new Array();
 828
 829         for(var i in object) {
 830                 if(typeof idx[i] === 'undefined') {
 831                         idx[i] = object[i];
 832                         sorted.push(i);
 833                 }
 834         }
 835
 836         sorted.sort(function(a, b) {
 837                 if(idx[a].priority < idx[b].priority) return -1;
 838                 if(idx[a].priority > idx[b].priority) return 1;
 839                 if(a < b) return -1;
 840                 return 1;
 841         });
 842
 843         return sorted;
 844 }
 845
 846 // ----------------------------------------------------------------------------
 847
 848 function gaugeChart(title, width, dimensions, colors) {
 849         if(typeof colors === 'undefined')
 850                 colors = '';
 851
 852         if(typeof dimensions === 'undefined')
 853                 dimensions = '';
 854
 855         return '<div data-netdata="CHART_UNIQUE_ID"'
 856                                                         + ' data-dimensions="' + dimensions + '"'
 857                                                         + ' data-chart-library="gauge"'
 858                                                         + ' data-gauge-adjust="width"'
 859                                                         + ' data-title="' + title + '"'
 860                                                         + ' data-width="' + width + '"'
 861                                                         + ' data-before="0"'
 862                                                         + ' data-after="-CHART_DURATION"'
 863                                                         + ' data-points="CHART_DURATION"'
 864                                                         + ' data-colors="' + colors + '"'
 865                                                         + ' role="application"></div>';
 866 }
 867
 868 // ----------------------------------------------------------------------------
 869
 870 var menuData = {
 871         'system': {
 872                 title: 'System Overview',
 873                 info: 'Overview of the key system metrics.'
 874         },
 875
 876         'ap': {
 877                 title: 'Access Points',
 878                 info: undefined
 879         },
 880
 881         'tc': {
 882                 title: 'Quality of Service',
 883                 info: 'Netdata collects and visualizes tc class utilization using its <a href="https://github.com/firehol/netdata/blob/master/plugins.d/tc-qos-helper.sh" target="_blank">tc-helper plugin</a>. If you also use <a href="http://firehol.org/#fireqos" target="_blank">FireQOS</a> for setting up QoS, netdata automatically collects interface and class names. If your QoS configuration includes overheads calculation, the values shown here will include these overheads (the total bandwidth for the same interface as reported in the Network Interfaces section, will be lower than the total bandwidth reported here). Also, data collection may have a slight time difference compared to the interface (QoS data collection is implemented with a BASH script, so a shift in data collection of a few milliseconds should be justified).'
 884         },
 885
 886         'net': {
 887                 title: 'Network Interfaces',
 888                 info: 'Per network interface statistics collected from <code>/proc/net/dev</code>.'
 889         },
 890
 891         'ipv4': {
 892                 title: 'IPv4 Networking',
 893                 info: undefined
 894         },
 895
 896         'ipv6': {
 897                 title: 'IPv6 Networking',
 898                 info: undefined
 899         },
 900
 901         'ipvs': {
 902                 title: 'IP Virtual Server',
 903                 info: undefined
 904         },
 905
 906         'netfilter': {
 907                 title: 'Firewall (netfilter)',
 908                 info: undefined
 909         },
 910
 911         'cpu': {
 912                 title: 'CPUs',
 913                 info: undefined
 914         },
 915
 916         'mem': {
 917                 title: 'Memory',
 918                 info: undefined
 919         },
 920
 921         'disk': {
 922                 title: 'Disks',
 923                 info: undefined
 924         },
 925
 926         'sensors': {
 927                 title: 'Sensors',
 928                 info: undefined
 929         },
 930
 931         'nfsd': {
 932                 title: 'File Server (nfsd)',
 933                 info: undefined
 934         },
 935
 936         'apps': {
 937                 title: 'Applications',
 938                 info: 'Per application statistics are collected using netdata\'s <code>apps.plugin</code>. This plugin walks through the entire <code>/proc</code> filesystem and aggregates statistics for applications of interest, defined in <code>/etc/netdata/apps_groups.conf</code> (the default is <a href="https://github.com/firehol/netdata/blob/master/conf.d/apps_groups.conf" target="_blank">here</a>). The plugin internaly builds a process tree (much like <code>ps fax</code> does), and groups processes together (evaluating both child and parent processes) so that the result is always a chart with a predefined set of dimensions (of course, only application groups found running are reported).<br/><b>IMPORTANT</b>: The values shown here are not 100% accurate. They only include values for the processes running. If an application is spawning childs continiously, which are terminated in just a few milliseconds (like shell scripts do), the values reported will be inaccurate. Linux does report the values for the exited childs of a process. However, these values are reported to the parent process <b>only when the child exits</b>. If these values, of the exited child processes, were also aggregated in the charts below, the charts would have been full of spikes, presenting unrealisting utilization for each process group. So, we decided to ignore these values and present only the utilization of <b>the currently running processes</b>.',
 939                 height: 1.5
 940         },
 941
 942         'netdata': {
 943                 title: 'Netdata Monitoring',
 944                 info: undefined
 945         },
 946
 947         'example': {
 948                 title: 'Example Charts',
 949                 info: undefined
 950         },
 951 };
 952
 953 var submenuData = {
 954         'mem.ksm': {
 955                 title: 'Memory Deduper',
 956                 info: 'Kernel Same-page Merging (KSM) is the kernel memory de-duper.'
 957         }
 958 };
 959
 960 var chartData = {
 961         'system.cpu': {
 962                 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.'
 963         },
 964
 965         'system.load': {
 966                 info: 'Current system load read from <code>/proc/loadavg</code>.',
 967                 height: 0.7
 968         },
 969
 970         'system.io': {
 971                 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.'
 972         },
 973
 974         'system.swapio': {
 975                 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).'
 976         },
 977
 978         'system.pgfaults': {
 979                 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.'
 980         },
 981
 982         'system.entropy': {
 983                 colors: '#CC22AA',
 984                 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.'
 985         },
 986
 987         'system.forks': {
 988                 colors: '#5555DD',
 989                 info: 'The number of new processes created per second, read from <code>/proc/stat</code>.'
 990         },
 991
 992         'system.intr': {
 993                 colors: '#DD5555',
 994                 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.'
 995         },
 996
 997         'system.interrupts': {
 998                 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.'
 999         },
1000
1001         'system.softirqs': {
1002                 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.'
1003         },
1004
1005         'system.processes': {
1006                 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.'
1007         },
1008
1009         'system.active_processes': {
1010                 info: 'All system active processes, read from <code>/proc/loadavg</code>.'
1011         },
1012
1013         'system.ctxt': {
1014                 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.'
1015         },
1016
1017         'system.idlejitter': {
1018                 colors: '#5555AA',
1019                 info: 'Idle jitter is calculated by netdata. A thread is spawned that requests to sleep for a few microseconds. When the system wakes it up, it measures how many microseconds have passed. The difference between the requested and the actual duration of the sleep, is the <b>idle jitter</b>. This number is useful in realtime environments, where CPU jitter can affect the quality of the service (like VoIP media gateways).'
1020         },
1021
1022         'system.ipv4': {
1023                 info: 'Total IPv4 Traffic, read from <code>/proc/net/netstat</code>.'
1024         },
1025
1026         'system.ipv6': {
1027                 info: 'Total IPv6 Traffic, read from <code>/proc/net/snmp6</code>.'
1028         },
1029
1030         'system.ram': {
1031                 info: 'System memory, read from <code>/proc/meminfo</code>.'
1032         },
1033
1034         'system.swap': {
1035                 info: 'System swap memory, read from <code>/proc/meminfo</code>.'
1036         },
1037
1038         'mem.ksm_savings': {
1039                 heads: [
1040                         gaugeChart('Saved', '12%', 'savings', '#0099CC')
1041                 ]
1042         },
1043
1044         'mem.ksm_ratios': {
1045                 heads: [
1046                         function(id) {
1047                                 return  '<div data-netdata="' + id + '"'
1048                                         + ' data-gauge-max-value="100"'
1049                                         + ' data-chart-library="gauge"'
1050                                         + ' data-title="Savings"'
1051                                         + ' data-units="percentage %"'
1052                                         + ' data-gauge-adjust="width"'
1053                                         + ' data-width="12%"'
1054                                         + ' data-before="0"'
1055                                         + ' data-after="-CHART_DURATION"'
1056                                         + ' data-points="CHART_DURATION"'
1057                                         + ' role="application"></div>';
1058                         }
1059                 ]
1060         },
1061
1062         'mem.committed': {
1063                 colors: NETDATA.colors[3]
1064         },
1065
1066         'apps.cpu': {
1067                 height: 2.0
1068         },
1069
1070         'apps.preads': {
1071                 height: 2.0
1072         },
1073
1074         'apps.pwrites': {
1075                 height: 2.0
1076         },
1077
1078         'tc.qos': {
1079                 heads: [
1080                         function(id) {
1081                                 if(id.match(/.*-ifb$/))
1082                                         return gaugeChart('Inbound', '12%', '', '#5555AA');
1083                                 else
1084                                         return gaugeChart('Outbound', '12%', '', '#AA9900');
1085                         }
1086                 ]
1087         },
1088
1089         'net.net': {
1090                 heads: [
1091                         gaugeChart('Received', '12%', 'received'),
1092                         gaugeChart('Sent', '12%', 'sent')
1093                 ]
1094         },
1095
1096         'disk.util': {
1097                 colors: '#FF5588',
1098                 heads: [
1099                         gaugeChart('Utilization', '12%', '', '#FF5588')
1100                 ]
1101         },
1102
1103         'disk.backlog': {
1104                 colors: '#0099CC'
1105         },
1106
1107         'disk.io': {
1108                 heads: [
1109                         gaugeChart('Read', '12%', 'reads'),
1110                         gaugeChart('Write', '12%', 'writes')
1111                 ]
1112         },
1113
1114         'netfilter.sockets': {
1115                 colors: '#88AA00',
1116                 heads: [
1117                         gaugeChart('Active Connections', '12%', '', '#88AA00')
1118                 ]
1119         },
1120
1121         'netfilter.new': {
1122                 heads: [
1123                         gaugeChart('New Connections', '12%', 'new', '#5555AA')
1124                 ]
1125         },
1126
1127         'disk.iotime': {
1128                 height: 0.5
1129         },
1130         'disk.mops': {
1131                 height: 0.5
1132         },
1133         'disk.svctm': {
1134                 height: 0.5
1135         },
1136         'disk.avgsz': {
1137                 height: 0.5
1138         },
1139         'disk.await': {
1140                 height: 0.5
1141         },
1142
1143         'apache.connections': {
1144                 colors: NETDATA.colors[4],
1145                 mainheads: [
1146                         gaugeChart('Connections', '12%', '', NETDATA.colors[4])
1147                 ]
1148         },
1149
1150         'apache.requests': {
1151                 colors: NETDATA.colors[0],
1152                 mainheads: [
1153                         gaugeChart('Connections', '12%', '', NETDATA.colors[0])
1154                 ]
1155         },
1156
1157         'apache.net': {
1158                 colors: NETDATA.colors[3],
1159                 mainheads: [
1160                         gaugeChart('Bandwidth', '12%', '', NETDATA.colors[3])
1161                 ]
1162         },
1163
1164         'apache.workers': {
1165                 mainheads: [
1166                         function(id) {
1167                                 return  '<div data-netdata="' + id + '"'
1168                                         + ' data-dimensions="busy"'
1169                                         + ' data-append-options="percentage"'
1170                                         + ' data-gauge-max-value="100"'
1171                                         + ' data-chart-library="gauge"'
1172                                         + ' data-title="Workers Utilization"'
1173                                         + ' data-units="percentage %"'
1174                                         + ' data-gauge-adjust="width"'
1175                                         + ' data-width="12%"'
1176                                         + ' data-before="0"'
1177                                         + ' data-after="-CHART_DURATION"'
1178                                         + ' data-points="CHART_DURATION"'
1179                                         + ' role="application"></div>';
1180                         }
1181                 ]
1182         },
1183
1184         'apache.bytesperreq': {
1185                 colors: NETDATA.colors[3],
1186                 height: 0.5
1187         },
1188
1189         'apache.reqpersec': {
1190                 colors: NETDATA.colors[4],
1191                 height: 0.5
1192         },
1193
1194         'apache.bytespersec': {
1195                 colors: NETDATA.colors[6],
1196                 height: 0.5
1197         },
1198
1199         'nginx.connections': {
1200                 colors: NETDATA.colors[4],
1201                 mainheads: [
1202                         gaugeChart('Connections', '12%', '', NETDATA.colors[4])
1203                 ]
1204         },
1205
1206         'nginx.requests': {
1207                 colors: NETDATA.colors[0],
1208                 mainheads: [
1209                         gaugeChart('Requests', '12%', '', NETDATA.colors[0])
1210                 ]
1211         }
1212 };
1213
1214 function anyAttribute(obj, attr, key, def) {
1215         if(typeof obj[key] !== 'undefined') {
1216                 if(typeof obj[key][attr] !== 'undefined')
1217                         return obj[key][attr];
1218         }
1219         return def;
1220 }
1221
1222 function menuTitle(menu) {
1223         return anyAttribute(menuData, 'title', menu, menu);
1224 }
1225
1226 function menuInfo(menu) {
1227         return anyAttribute(menuData, 'title', menu, null);
1228 }
1229
1230 function menuHeight(menu, relative) {
1231         return anyAttribute(menuData, 'height', menu, 1.0) * relative;
1232 }
1233
1234 function submenuTitle(menu, submenu) {
1235         var key = menu + '.' + submenu;
1236         return anyAttribute(submenuData, 'title', key, submenu);
1237 }
1238
1239 function submenuInfo(menu, submenu) {
1240         var key = menu + '.' + submenu;
1241         return anyAttribute(submenuData, 'info', key, null);
1242 }
1243
1244 function submenuHeight(menu, submenu, relative) {
1245         var key = menu + '.' + submenu;
1246         return anyAttribute(submenuData, 'height', key, 1.0) * relative;
1247 }
1248
1249
1250 function chartInfo(id) {
1251         if(typeof chartData[id] !== 'undefined' && typeof chartData[id].info !== 'undefined')
1252                 return '<div class="chart-message netdata-chart-alignment" role="document">' + chartData[id].info + '</div>';
1253         else
1254                 return '';
1255 }
1256
1257 function chartHeight(id, def) {
1258         if(typeof chartData[id] !== 'undefined' && typeof chartData[id].height !== 'undefined')
1259                 return def * chartData[id].height;
1260         else
1261                 return def;
1262 }
1263
1264
1265 // ----------------------------------------------------------------------------
1266
1267 // enrich the data structure returned by netdata
1268 // to reflect our menu system and content
1269 function enrichChartData(chart) {
1270         var tmp = chart.type.split('_')[0];
1271
1272         switch(tmp) {
1273                 case 'ap':
1274                 case 'net':
1275                 case 'disk':
1276                         chart.menu = tmp;
1277                         break;
1278
1279                 case 'tc':
1280                         chart.menu = tmp;
1281
1282                         // find the interface name from the name
1283                         if(typeof options.submenu_names[chart.family] === 'undefined' || options.submenu_names[chart.family] === chart.family)
1284                                 options.submenu_names[chart.family] = chart.name.split('.')[1].split('_')[0];
1285
1286                         // increase the priority of IFB devices
1287                         if(chart.id.match(/.*-ifb$/))
1288                                 chart.priority--;
1289
1290                         break;
1291
1292                 default:
1293                         chart.menu = chart.type;
1294                         break;
1295         }
1296
1297         chart.submenu = chart.family;
1298 }
1299
1300 // ----------------------------------------------------------------------------
1301
1302 function name2id(s) {
1303         return s
1304                 .replace(' ', '_')
1305                 .replace('(', '_')
1306                 .replace(')', '_')
1307                 .replace('.', '_')
1308                 .replace('/', '_');
1309 }
1310
1311 function headMain(charts, duration) {
1312         var head = '';
1313
1314         if(typeof charts['system.swap'] !== 'undefined')
1315                 head += '<div style="margin-right: 10px;" data-netdata="system.swap"'
1316                 + ' data-dimensions="free"'
1317                 + ' data-append-options="percentage"'
1318                 + ' data-chart-library="easypiechart"'
1319                 + ' data-title="Free Swap"'
1320                 + ' data-units="%"'
1321                 + ' data-easypiechart-max-value="100"'
1322                 + ' data-width="8%"'
1323                 + ' data-before="0"'
1324                 + ' data-after="-' + duration.toString() + '"'
1325                 + ' data-points="' + duration.toString() + '"'
1326                 + ' data-colors="#DD4400"'
1327                 + ' role="application"></div>';
1328
1329         if(typeof charts['system.io'] !== 'undefined') {
1330                 head += '<div style="margin-right: 10px;" data-netdata="system.io"'
1331                 + ' data-dimensions="in"'
1332                 + ' data-chart-library="easypiechart"'
1333                 + ' data-title="Disk Read"'
1334                 + ' data-units="KB / s"'
1335                 + ' data-width="10%"'
1336                 + ' data-before="0"'
1337                 + ' data-after="-' + duration.toString() + '"'
1338                 + ' data-points="' + duration.toString() + '"'
1339                 + ' role="application"></div>';
1340
1341                 head += '<div style="margin-right: 10px;" data-netdata="system.io"'
1342                 + ' data-dimensions="out"'
1343                 + ' data-chart-library="easypiechart"'
1344                 + ' data-title="Disk Write"'
1345                 + ' data-units="KB / s"'
1346                 + ' data-width="10%"'
1347                 + ' data-before="0"'
1348                 + ' data-after="-' + duration.toString() + '"'
1349                 + ' data-points="' + duration.toString() + '"'
1350                 + ' role="application"></div>';
1351         }
1352
1353         if(typeof charts['system.cpu'] !== 'undefined')
1354                 head += '<div data-netdata="system.cpu"'
1355                 + ' data-chart-library="gauge"'
1356                 + ' data-title="CPU"'
1357                 + ' data-units="%"'
1358                 + ' data-gauge-max-value="100"'
1359                 + ' data-width="18%"'
1360                 + ' data-after="-' + duration.toString() + '"'
1361                 + ' data-points="' + duration.toString() + '"'
1362                 + ' data-colors="' + NETDATA.colors[12] + '"'
1363                 + ' role="application"></div>';
1364
1365         if(typeof charts['system.ipv4'] !== 'undefined') {
1366                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv4"'
1367                 + ' data-dimensions="received"'
1368                 + ' data-chart-library="easypiechart"'
1369                 + ' data-title="IPv4 Inbound"'
1370                 + ' data-units="kbps"'
1371                 + ' data-width="10%"'
1372                 + ' data-before="0"'
1373                 + ' data-after="-' + duration.toString() + '"'
1374                 + ' data-points="' + duration.toString() + '"'
1375                 + ' role="application"></div>';
1376
1377                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv4"'
1378                 + ' data-dimensions="sent"'
1379                 + ' data-chart-library="easypiechart"'
1380                 + ' data-title="IPv4 Outbound"'
1381                 + ' data-units="kbps"'
1382                 + ' data-width="10%"'
1383                 + ' data-before="0"'
1384                 + ' data-after="-' + duration.toString() + '"'
1385                 + ' data-points="' + duration.toString() + '"'
1386                 + ' role="application"></div>';
1387         }
1388         else if(typeof charts['system.ipv6'] !== 'undefined') {
1389                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv6"'
1390                 + ' data-dimensions="received"'
1391                 + ' data-chart-library="easypiechart"'
1392                 + ' data-title="IPv6 Inbound"'
1393                 + ' data-units="kbps"'
1394                 + ' data-width="10%"'
1395                 + ' data-before="0"'
1396                 + ' data-after="-' + duration.toString() + '"'
1397                 + ' data-points="' + duration.toString() + '"'
1398                 + ' role="application"></div>';
1399
1400                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv6"'
1401                 + ' data-dimensions="sent"'
1402                 + ' data-chart-library="easypiechart"'
1403                 + ' data-title="IPv6 Outbound"'
1404                 + ' data-units="kbps"'
1405                 + ' data-width="10%"'
1406                 + ' data-before="0"'
1407                 + ' data-after="-' + duration.toString() + '"'
1408                 + ' data-points="' + duration.toString() + '"'
1409                 + ' role="application"></div>';
1410         }
1411
1412         if(typeof charts['system.ram'] !== 'undefined')
1413                 head += '<div style="margin-right: 10px;" data-netdata="system.ram"'
1414                 + ' data-dimensions="cached|free"'
1415                 + ' data-append-options="percentage"'
1416                 + ' data-chart-library="easypiechart"'
1417                 + ' data-title="Available RAM"'
1418                 + ' data-units="%"'
1419                 + ' data-easypiechart-max-value="100"'
1420                 + ' data-width="8%"'
1421                 + ' data-after="-' + duration.toString() + '"'
1422                 + ' data-points="' + duration.toString() + '"'
1423                 + ' data-colors="' + NETDATA.colors[7] + '"'
1424                 + ' role="application"></div>';
1425
1426         return head;
1427 }
1428
1429 function generateHeadCharts(type, chart, duration) {
1430         var head = '';
1431         var hcharts = anyAttribute(chartData, type, chart.context, []);
1432         if(hcharts.length > 0) {
1433                 var hi = 0, hlen = hcharts.length;
1434                 while(hi < hlen) {
1435                         if(typeof hcharts[hi] === 'function')
1436                                 head += hcharts[hi](chart.id).replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
1437                         else
1438                                 head += hcharts[hi].replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
1439                         hi++;
1440                 }
1441         }
1442         return head;
1443 }
1444
1445 function renderPage(menus, data) {
1446         var div = document.getElementById('charts_div');
1447         var pcent_width = Math.floor(100 / chartsPerRow($(div).width()));
1448
1449         // find the proper duration for per-second updates
1450         var duration = Math.round(($(div).width() * pcent_width / 100 * data.update_every / 3) / 60) * 60;
1451         var html = '';
1452         var sidebar = '<ul class="nav dashboard-sidenav" data-spy="affix" id="sidebar_ul">';
1453         var mainhead = headMain(data.charts, duration);
1454
1455         // sort the menus
1456         var main = sortObjectByPriority(menus);
1457         var i = 0, len = main.length;
1458         while(i < len) {
1459                 var menu = main[i++];
1460
1461                 // generate an entry at the main menu
1462
1463                 sidebar += '<li class=""><a href="#' + menu + '">' + menus[menu].title + '</a><ul class="nav">';
1464                 html += '<div role="section"><div role="sectionhead"><h1 id="' + menu + '" role="heading">' + menus[menu].title + '</h1></div><div id="' + menu + '" role="document">';
1465
1466                 if(menus[menu].info !== null)
1467                         html += menus[menu].info;
1468
1469                 // console.log(' >> ' + menu + ' (' + menus[menu].priority + '): ' + menus[menu].title);
1470
1471                 var shtml = '';
1472                 var mhead = '<div style="width: 100%; text-align: center;">' + mainhead;
1473                 mainhead = '';
1474
1475                 // sort the submenus of this menu
1476                 var sub = sortObjectByPriority(menus[menu].submenus);
1477                 var si = 0, slen = sub.length;
1478                 while(si < slen) {
1479                         var submenu = sub[si++];
1480
1481                         // generate an entry at the submenu
1482                         sidebar += '<li class><a href="#' + name2id(menu + '_' + submenu) + '">' + menus[menu].submenus[submenu].title + '</a></li>';
1483                         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>';
1484
1485                         if(menus[menu].submenus[submenu].info !== null)
1486                                 shtml += '<div class="chart-message netdata-chart-alignment" role="document">' + menus[menu].submenus[submenu].info + '</div>';
1487
1488                         var head = '<div style="width: 100%; text-align: center;">';
1489                         var chtml = '';
1490
1491                         // console.log('    \------- ' + submenu + ' (' + menus[menu].submenus[submenu].priority + '): ' + menus[menu].submenus[submenu].title);
1492
1493                         // sort the charts in this submenu of this menu
1494                         menus[menu].submenus[submenu].charts.sort(prioritySort);
1495                         var ci = 0, clen = menus[menu].submenus[submenu].charts.length;
1496                         while(ci < clen) {
1497                                 var chart = menus[menu].submenus[submenu].charts[ci++];
1498
1499                                 // generate the submenu heading charts
1500                                 mhead += generateHeadCharts('mainheads', chart, duration);
1501                                 head += generateHeadCharts('heads', chart, duration);
1502
1503                                 // generate the chart
1504                                 chtml += chartInfo(chart.context) + '<div data-netdata="' + chart.id + '"'
1505                                         + ' data-width="' + pcent_width.toString() + '%"'
1506                                         + ' data-height="' + chartHeight(chart.context, options.chartsHeight).toString() + 'px"'
1507                                         + ' data-before="0"'
1508                                         + ' data-after="-' + duration.toString() + '"'
1509                                         + ' data-id="' + name2id(options.hostname + '/' + chart.id) + '"'
1510                                         + ' data-colors="' + anyAttribute(chartData, 'colors', chart.context, '') + '"'
1511                                         + ' role="application"></div>';
1512
1513                                 // console.log('         \------- ' + chart.id + ' (' + chart.priority + '): ' + chart.context  + ' height: ' + menus[menu].submenus[submenu].height);
1514                         }
1515
1516                         head += '</div>';
1517                         shtml += head + chtml + '</div>';
1518                 }
1519
1520                 mhead += '</div>';
1521                 sidebar += '</ul></li>';
1522                 html += mhead + shtml + '</div></div><hr role="separator"/>';
1523         }
1524
1525         sidebar += '</ul>';
1526         div.innerHTML = html;
1527         document.getElementById('sidebar').innerHTML = sidebar;
1528         finalizePage();
1529 }
1530
1531 function renderChartsAndMenu(data) {
1532         var menus = {};
1533         var charts = data.charts;
1534
1535         for(var c in charts) {
1536                 enrichChartData(charts[c]);
1537
1538                 // create the menu
1539                 if(typeof menus[charts[c].menu] === 'undefined') {
1540                         menus[charts[c].menu] = {
1541                                 priority: charts[c].priority,
1542                                 submenus: {},
1543                                 title: menuTitle(charts[c].menu),
1544                                 info: menuInfo(charts[c].menu),
1545                                 height: menuHeight(charts[c].menu, options.chartsHeight)
1546                         };
1547                 }
1548
1549                 if(charts[c].priority < menus[charts[c].menu].priority)
1550                         menus[charts[c].menu].priority = charts[c].priority;
1551
1552                 // create the submenu
1553                 if(typeof menus[charts[c].menu].submenus[charts[c].submenu] === 'undefined') {
1554                         menus[charts[c].menu].submenus[charts[c].submenu] = {
1555                                 priority: charts[c].priority,
1556                                 charts: new Array(),
1557                                 title: null,
1558                                 info: submenuInfo(charts[c].menu, charts[c].submenu),
1559                                 height: submenuHeight(charts[c].menu, charts[c].submenu, menus[charts[c].menu].height)
1560                         };
1561                 }
1562
1563                 if(charts[c].priority < menus[charts[c].menu].submenus[charts[c].submenu].priority)
1564                         menus[charts[c].menu].submenus[charts[c].submenu].priority = charts[c].priority;
1565
1566                 // index the chart in the menu/submenu
1567                 menus[charts[c].menu].submenus[charts[c].submenu].charts.push(charts[c]);
1568         }
1569
1570         for(var m in menus) {
1571                 for(var s in menus[m].submenus) {
1572                         // set the family using a name
1573                         if(typeof options.submenu_names[s] !== 'undefined') {
1574                                 menus[m].submenus[s].title = s + ' (' + options.submenu_names[s] + ')';
1575                         }
1576                         else {
1577                                 menus[m].submenus[s].title = submenuTitle(m, s);
1578                         }
1579                 }
1580         }
1581
1582         renderPage(menus, data);
1583 }
1584
1585 function downloadAllCharts(netdata_url) {
1586         if(typeof netdata_url === 'undefined' || netdata_url === null)
1587                 netdata_url = NETDATA.serverDefault;
1588
1589         NETDATA.pause(function() {
1590
1591                 // download all the charts the server knows
1592                 NETDATA.chartRegistry.downloadAll(netdata_url, function(data) {
1593
1594                         options.data = data;
1595                         options.hostname = data.hostname;
1596                         document.getElementById('hostname').innerHTML = options.hostname;
1597                         document.getElementById('hostname').href = NETDATA.serverDefault;
1598                         document.title = options.hostname + ' dashboard';
1599
1600                         renderChartsAndMenu(data);
1601
1602                         // prepare our DOM
1603 //                      prepareScreen(data);
1604
1605                         // due to affix issues, prepareScreen() will unpause
1606                         // netdata as needed
1607                 });
1608         });
1609 }
1610
1611 // ----------------------------------------------------------------------------
1612
1613 function versionLog(msg) {
1614         document.getElementById('versionCheckLog').innerHTML = msg;
1615 }
1616
1617 function getNetdataVersion(callback) {
1618         versionLog('Downloading installed version info from netdata...');
1619
1620         $.ajax({
1621                 url: 'version.txt',
1622                 async: true,
1623                 cache: false
1624         })
1625         .done(function(data) {
1626                 data = data.replace(/(\r\n|\n|\r| |\t)/gm,"");
1627                 if(data.length !== 40) {
1628                         versionLog('Received version string is invalid.');
1629                         callback(null);
1630                 }
1631                 else {
1632                         versionLog('Installed version of netdata is ' + data);
1633                         document.getElementById('netdataVersion').innerHTML = data;
1634                         callback(data);
1635                 }
1636         })
1637         .fail(function() {
1638                 versionLog('Failed to download installed version info from netdata!');
1639                 callback(null);
1640         });
1641 }
1642
1643 function getGithubLatestCommit(callback) {
1644         versionLog('Downloading latest version info from github...');
1645
1646         $.ajax({
1647                 url: 'https://api.github.com/repos/firehol/netdata/commits',
1648                 async: true,
1649                 cache: false
1650         })
1651         .done(function(data) {
1652                 versionLog('Latest version info from github is ' + data[0].sha);
1653                 callback(data[0].sha);
1654         })
1655         .fail(function() {
1656                 versionLog('Failed to download installed version info from github!');
1657                 callback(null);
1658         });
1659 }
1660
1661 function checkForUpdate(callback) {
1662         getNetdataVersion(function(sha1) {
1663                 if(sha1 === null) callback(null, null);
1664
1665                 getGithubLatestCommit(function(sha2) {
1666                         callback(sha1, sha2);
1667                 });
1668         });
1669
1670         return null;
1671 }
1672
1673 var updateBlinkCounter = 0;
1674 function notifyForUpdate(force) {
1675         versionLog('<p>checking for updates...</p>');
1676
1677         var now = new Date().getTime();
1678
1679         if(typeof force === 'undefined' || force !== true) {
1680                 var last = loadLocalStorage('last_update_check');
1681
1682                 if(typeof last === 'string')
1683                         last = parseInt(last);
1684                 else
1685                         last = 0;
1686
1687                 if(now - last < 3600000 * 8) {
1688                         // no need to check it - too soon
1689                         return;
1690                 }
1691         }
1692
1693         checkForUpdate(function(sha1, sha2) {
1694                 var save = false;
1695
1696                 if(sha1 === null) {
1697                         save = false;
1698                         versionLog('<p><big>Failed to get your netdata version!</big></p><p>You can always get the latest version of netdata from <a href="https://github.com/firehol/netdata" target="_blank">its github page</a>.</p>');
1699                 }
1700                 else if(sha2 === null) {
1701                         save = false;
1702                         versionLog('<p><big>Failed to get the latest version from github.</big></p><p>You can always get the latest version of netdata from <a href="https://github.com/firehol/netdata" target="_blank">its github page</a>.</p>');
1703                 }
1704                 else if(sha1 === sha2) {
1705                         save = true;
1706                         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>');
1707                 }
1708                 else {
1709                         save = true;
1710                         var compare = 'https://github.com/firehol/netdata/compare/' + sha1.toString() + '...' + sha2.toString();
1711
1712                         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>');
1713
1714                         function updateButtonBlink() {
1715                                 updateBlinkCounter--;
1716                                 if(updateBlinkCounter > 0)
1717                                         $('#updateButton').fadeOut(500).fadeIn(500, updateButtonBlink);
1718                         }
1719
1720                         if(updateBlinkCounter === 0) {
1721                                 updateBlinkCounter = 300;
1722                                 updateButtonBlink();
1723                         }
1724                 }
1725
1726                 if(save)
1727                         saveLocalStorage('last_update_check', now.toString());
1728         });
1729 }
1730
1731 // ----------------------------------------------------------------------------
1732
1733 function finalizePage() {
1734         // resize all charts - without starting the background thread
1735         // this has to be done while NETDATA is paused
1736         // if we ommit this, the affix menu will be wrong, since all
1737         // the Dom elements are initially zero-sized
1738         NETDATA.parseDom();
1739
1740         // let it run (update the charts)
1741         NETDATA.unpause();
1742
1743         // check if we have to jump to a specific section
1744         var hash = location.hash.replace('#','');
1745         if(hash != '') {
1746                 // Clear the hash in the URL
1747                 // location.hash = '';   // delete front "//" if you want to change the address bar
1748                 var offset = $(location.hash).offset();
1749                 if(typeof offset !== 'undefined')
1750                         $('html, body').animate({ scrollTop: offset.top }, 0);
1751         }
1752
1753         /* activate bootstrap sidebar (affix) */
1754         $('#sidebar').affix({
1755                 offset: {
1756                         top: (document.location.hostname === demo_hostname)?150:0,
1757                         bottom: 0
1758                 }
1759         });
1760
1761         /* fix scrolling of very long affix lists
1762            http://stackoverflow.com/questions/21691585/bootstrap-3-1-0-affix-too-long
1763          */
1764         $('#sidebar').on('affixed.bs.affix', function() {
1765                 $(this).removeAttr('style');
1766         });
1767
1768         /* activate bootstrap scrollspy (needed for sidebar) */
1769         $(document.body).scrollspy({
1770                 target: '#sidebar',
1771                 offset: $(window).height() / 3 // controls the diff of the <hX> element to the top, to select it
1772         });
1773
1774         document.getElementById('footer').style.display = 'block';
1775
1776
1777         var update_options_modal = function() {
1778                 // console.log('update_options_modal');
1779
1780                 var sync_option = function(option) {
1781                         var self = $('#' + option);
1782
1783                         if(self.prop('checked') !== NETDATA.getOption(option)) {
1784                                 // console.log('switching ' + option.toString());
1785                                 self.bootstrapToggle(NETDATA.getOption(option)?'on':'off');
1786                         }
1787                 }
1788
1789                 var theme_sync_option = function(option) {
1790                         var self = $('#' + option);
1791
1792                         self.bootstrapToggle(netdataTheme === 'slate'?'on':'off');
1793                 }
1794
1795                 sync_option('eliminate_zero_dimensions');
1796                 sync_option('destroy_on_hide');
1797                 sync_option('parallel_refresher');
1798                 sync_option('concurrent_refreshes');
1799                 sync_option('sync_selection');
1800                 sync_option('sync_pan_and_zoom');
1801                 sync_option('stop_updates_when_focus_is_lost');
1802                 sync_option('smooth_plot');
1803                 sync_option('pan_and_zoom_data_padding');
1804                 theme_sync_option('netdata_theme_control');
1805
1806                 if(NETDATA.getOption('parallel_refresher') === false) {
1807                         $('#concurrent_refreshes_row').hide();
1808                 }
1809                 else {
1810                         $('#concurrent_refreshes_row').show();
1811                 }
1812         };
1813         NETDATA.setOption('setOptionCallback', update_options_modal);
1814
1815         // handle options changes
1816         $('#eliminate_zero_dimensions').change(function()       { NETDATA.setOption('eliminate_zero_dimensions', $(this).prop('checked')); });
1817         $('#destroy_on_hide').change(function()                 { NETDATA.setOption('destroy_on_hide', $(this).prop('checked')); });
1818         $('#parallel_refresher').change(function()              { NETDATA.setOption('parallel_refresher', $(this).prop('checked')); });
1819         $('#concurrent_refreshes').change(function()            { NETDATA.setOption('concurrent_refreshes', $(this).prop('checked')); });
1820         $('#sync_selection').change(function()                  { NETDATA.setOption('sync_selection', $(this).prop('checked')); });
1821         $('#sync_pan_and_zoom').change(function()               { NETDATA.setOption('sync_pan_and_zoom', $(this).prop('checked')); });
1822         $('#stop_updates_when_focus_is_lost').change(function() { NETDATA.setOption('stop_updates_when_focus_is_lost', $(this).prop('checked')); });
1823         $('#smooth_plot').change(function()                     { NETDATA.setOption('smooth_plot', $(this).prop('checked')); });
1824         $('#pan_and_zoom_data_padding').change(function()       { NETDATA.setOption('pan_and_zoom_data_padding', $(this).prop('checked')); });
1825
1826         // this has to be the last
1827         // it reloads the page
1828         $('#netdata_theme_control').change(function() {
1829                 if(setTheme($(this).prop('checked')?'slate':'default'))
1830                         location.reload();
1831         });
1832
1833         if(document.location.hostname === demo_hostname) {
1834                 setTimeout(function() {
1835                         $('#welcomeModal').modal();
1836                 }, 1000);
1837         }
1838         else
1839                 notifyForUpdate();
1840
1841         $('#updateModal').on('shown.bs.modal', function() {
1842                 notifyForUpdate(true);
1843         })
1844 }
1845
1846 function resetDashboardOptions() {
1847         NETDATA.resetOptions();
1848         if(setTheme('slate'))
1849                 location.reload();
1850 }
1851
1852 downloadAllCharts();
1853
1854 </script>
1855
1856 </body>
1857 </html>