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<!doctype html>
<!--
about:memory template page
-->
<html id="t">
<head>
<meta charset="utf-8">
<title>About Memory</title>
<link rel="stylesheet" href="chrome://resources/css/text_defaults.css">
<link rel="stylesheet" href="chrome://memory-redirect/about_memory.css">
<style>
table.list#browserComparison tr:not([class*='firstRow']) > *:nth-child(1),
table.list#browserComparison tr:not([class*='firstRow']) > *:nth-child(6),
table.list#browserComparison tr.firstRow th:nth-child(1) {
border-right: 1px solid #b5c6de;
}
table.list#memoryDetails tr:not([class*='firstRow']) > *:nth-child(2),
table.list#memoryDetails tr:not([class*='firstRow']) > *:nth-child(7),
table.list#memoryDetails tr.firstRow th:nth-child(2) {
border-right: 1px solid #b5c6de;
}
</style>
<script src="chrome://resources/js/load_time_data.js"></script>
<script src="chrome://memory-redirect/memory.js"></script>
<script src="chrome://memory-redirect/strings.js"></script>
</head>
<body>
<div id="header">
<h1>
About memory
</h1>
<p>
Measuring memory usage in a multi-process browser
</p>
</div>
<div id="content">
<h2>
Summary
<div class="help">
<div>
<p>
Summary of memory used by currently active browsers.<p>
For Chromium, processes used to to display diagnostics
information (such as this "about:memory") are excluded.
</p>
</div>
</div>
</h2>
<table class="list" id="browserComparison">
<colgroup>
<col class="name">
<col class="number">
<col class="number">
<col class="number">
<col class="number">
</colgroup>
<tr class="firstRow doNotFilter">
<th>
</th>
<th colspan="4">
Memory
<div class="help">
<div>
<p>
<strong>Memory</strong>
</p>
<p>
<strong>Resident:</strong>
Amount of memory that is present in physical RAM.
This is the best indicator of browser memory resource usage.
</p>
<p>
<strong>Shared:</strong>
Amount of memory that is present in physical RAM and can
be shared with another process.
</p>
<p>
<strong>Private:</strong>
Amount of memory that is present in physical RAM and can not
be shared with another process.
</p>
<p>
<strong>Virtual:</strong>
Amount of address space allocated in virtual memory.
</p>
<p>
<i>(Note that the memory for this tab is not included in the browser totals.)</i>
</p>
</div>
</div>
</th>
</tr>
<tr class="secondRow doNotFilter">
<th class="name">
Browser
</th>
<th class="number">
Resident
</th>
<th class="number">
Shared
</th>
<th class="number">
Private
</th>
<th class="number">
Virtual
</th>
</tr>
<tr jsselect="browsers">
<td class="name">
<div>
<strong jscontent="name"></strong> <span jscontent="version"></span>
</div>
</td>
<td class="number">
<span class="th" jscontent="formatNumber(ws_shareable)"></span><span class="k">k</span>
</td>
<td class="number">
<span class="th" jscontent="formatNumber(ws_shared)"></span><span class="k">k</span>
</td>
<td class="number">
<span class="th" jscontent="formatNumber(ws_priv)"></span><span class="k">k</span>
</td>
<td class="number">
<span class="th" jscontent="formatNumber(comm_priv)"></span><span class="k">k</span>
</td>
</tr>
</table>
<div class="otherbrowsers" jsdisplay="browsers.length == 1">
Note: This page will show memory use for all running browsers,
not just Chrome.
</div>
<div class="otherbrowsers" jsdisplay="browsers.length > 1">
Note: Chrome includes memory used by plug-ins, other browsers may not.
</div>
<div class="otherbrowsers">
(Bug: We seriously overcount our own memory usage: <a href="http://crbug.com/25454">Issue 25454</a>.)
</div>
<br><br><br>
<h2>
Processes
<div class="help">
<div>
<p>
Details of memory usage for each of Chromium's processes.
</p>
</div>
</div>
</h2>
<table class="list" id="memoryDetails">
<colgroup>
<col class="pid">
<col class="name">
<col class="number">
<col class="number">
<col class="number">
<col class="number">
</colgroup>
<tr class="firstRow doNotFilter">
<th>
</th>
<th>
</th>
<th colspan="4">
Memory
</th>
</tr>
<tr class="secondRow doNotFilter">
<th class="pid">
PID
</th>
<th class="name">
Name
</th>
<th class="number">
Resident
</th>
<th class="number">
Shared
</th>
<th class="number">
Private
</th>
<th class="number">
Virtual
</th>
</tr>
<tr jsselect="browzr_data">
<td class="pid">
<span class="th" jscontent="pid"></span>
</td>
<td class="name">
<div>
Browser
</div>
</td>
<td class="number">
<span class="th" jscontent="formatNumber(ws_shareable)"></span><span class="k">k</span>
</td>
<td class="number">
<span class="th" jscontent="formatNumber(ws_shared)"></span><span class="k">k</span>
</td>
<td class="number">
<span class="th" jscontent="formatNumber(ws_priv)"></span><span class="k">k</span>
</td>
<td class="number">
<span class="th" jscontent="formatNumber(comm_priv)"></span><span class="k">k</span>
</td>
</tr>
<tr jsselect="child_data">
<td class="pid">
<span class="th" jscontent="pid"></span>
</td>
<td class="name">
<div jscontent="child_name"></div>
<div jsselect="titles">
<span jscontent="$this"></span><br>
</div>
</td>
<td class="number">
<span class="th" jscontent="formatNumber(ws_shareable)"></span><span class="k">k</span>
</td>
<td class="number">
<span class="th" jscontent="formatNumber(ws_shared)"></span><span class="k">k</span>
</td>
<td class="number">
<span class="th" jscontent="formatNumber(ws_priv)"></span><span class="k">k</span>
</td>
<td class="number">
<span class="th" jscontent="formatNumber(comm_priv)"></span><span class="k">k</span>
</td>
</tr>
<tr class="noResults">
<td colspan="99">
No results found.
</td>
</tr>
</table>
<div class="otherbrowsers">
(Note: Due to memory sharing between processes, summing memory usage does not give total memory usage.)
</div>
</div>
<script src="chrome://resources/js/jstemplate_compiled.js"></script>
</body>
</html>
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