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518 lines
11 KiB
HTML
518 lines
11 KiB
HTML
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</style>
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<title>cset(1)</title>
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</head>
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<body>
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<div id="header">
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<h1>
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cset(1) Manual Page
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</h1>
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<h2>NAME</h2>
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<div class="sectionbody">
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<p>cset -
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manage cpusets functions in the Linux kernel
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</p>
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</div>
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</div>
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<h2>SYNOPSIS</h2>
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<div class="sectionbody">
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<div class="verseblock">
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<div class="content"><em>cset</em> [--version | --help | --log]
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<em>cset</em> [help <command> | <command> --help]
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<em>cset</em> [cset options] <command> [command options] [args]</div></div>
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</div>
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<h2>DESCRIPTION</h2>
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<div class="sectionbody">
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<div class="admonitionblock">
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<table><tr>
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<td class="icon">
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<div class="title">Note</div>
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</td>
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<td class="content">In general, you need to have root permissions to run cset. The
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tool mounts the cpusets filesystem and manipulates it. Non-root users
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do not have permission for these actions.</td>
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</tr></table>
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</div>
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<p>Cpuset is a Python application to make using the cpusets facilities in
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the Linux kernel easier. The actual included command is called <em>cset</em>
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and it allows manipulation of cpusets on the system and provides
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higher level functions such as implementation and control of a basic
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cpu shielding setup.</p>
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<h3>Typical uses of cpuset include</h3>
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<dl>
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<dt>
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Setting up and managing a simple shielded CPU environment
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</dt>
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<dd>
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<p>
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The concept of <em>shielded</em> cpus is that a certain number of
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cpus are partitioned off on the system and only processes that
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are of interest are run on these cpus (i.e., inside the shield).
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</p>
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<p>For a simple shielded configuration, one typically uses three cpusets:
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the root set, a system set and a user set. <em>Cset</em> includes a super
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command that implements this strategy and lets you easily manage it.
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See <a href="cset-shield.html">cset-shield(1)</a> for more details.</p>
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</dd>
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<dt>
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Setting up and managing a comples shielding environment
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</dt>
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<dd>
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<p>
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Shielding can be more complex of course where concepts such as
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priority cpusets and intersecting cpuset can be used. You can
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use <em>cset</em> to help manage this type of shielding as well. You
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will need to use the <a href="cset-set.html">cset-set(1)</a> and <a href="cset-proc.html">cset-proc(1)</a>
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subcommands directly to do that.
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</p>
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</dd>
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<dt>
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Managing cpusets on the system
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</dt>
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<dd>
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<p>
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The cset subcommand <a href="cset-set.html">cset-set(1)</a> allows you to create and
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destroy arbitrary cpusets on the system and assign arbitrary
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cpus and memory nodes to them. The cpusets so created have to
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follow the Linux kernel cpuset rules. See the <a href="cset-set.html">cset-set(1)</a>
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subcommand for more details.
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</p>
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</dd>
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<dt>
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Managing processes that run on various system cpusets
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</dt>
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<dd>
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<p>
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The cset subcommand <a href="cset-proc.html">cset-proc(1)</a> allows you to manage
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processes running on various cpusets created on the system.
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You can exec new processes in specific cpusets and move tasks
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around existing cpusets. See the <a href="cset-proc.html">cset-proc(1)</a> subcommand
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for more details.
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</p>
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</dd>
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</dl>
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</div>
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<h2>OPTIONS</h2>
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<div class="sectionbody">
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<p>The following generic option flags are available. Additional options
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are available per-command, and documented in the command-specific
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documentation.</p>
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<dl>
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<dt>
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<em>cset</em> --version
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</dt>
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<dd>
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<p>
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Prints the cpuset suite version that the <em>cset</em> program came
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from, as well as version of other components used, such as
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Python and the kernel.
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</p>
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</dd>
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<dt>
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<em>cset</em> --help
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</dt>
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<dd>
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<p>
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Prints the synopsis and a list of all commands.
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</p>
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</dd>
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<dt>
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<em>cset</em> --log <filename>
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</dt>
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<dd>
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<p>
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Creates a log file for the current run. All manner of useful
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information is stored in this file. This is usually used to
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debug cpuset when things don't go as planned.
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</p>
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</dd>
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<dt>
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<em>cset</em> help <em>command</em>
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</dt>
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<dd>
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<p>
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Although not strictly an "option", this is a very helpful way
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to execute help with cpuset. The command prints out a lengthy
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summary of how the specified subcommand works.
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</p>
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</dd>
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</dl>
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</div>
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<h2>CPUSET COMMANDS</h2>
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<div class="sectionbody">
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<p>The cpuset commands are divided into groups, according to the primary
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purpose of those commands. Following is a short description of each
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command. A more detailed description is available in individual
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command manpages. Those manpages are named <em>cset-<command>(1)</em>. The
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first command, <em>help</em>, is especially useful as it prints out a long
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summary of what a particular command does.</p>
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<dl>
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<dt>
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<em>cset help</em>
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</dt>
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<dd>
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<p>
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print the detailed command usage
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</p>
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</dd>
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<dt>
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<em>cset version</em>
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</dt>
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<dd>
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<p>
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display version information
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</p>
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</dd>
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<dt>
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<em>cset copyright</em>
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</dt>
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<dd>
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<p>
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display copyright information
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</p>
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</dd>
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<dt>
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<em>cset shield</em>
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</dt>
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<dd>
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<p>
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supercommand to set up and manage basic shielding (see
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<a href="cset-shield.html">cset-shield(1)</a>)
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</p>
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</dd>
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<dt>
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<em>cset set</em>
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</dt>
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<dd>
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<p>
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create, modify and destroy cpusets (see <a href="cset-set.html">cset-set(1)</a>)
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</p>
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</dd>
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<dt>
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<em>cset proc</em>
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</dt>
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<dd>
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<p>
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create and manage processes within cpusets (see
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<a href="cset-proc.html">cset-proc(1)</a>)
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</p>
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</dd>
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</dl>
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</div>
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<h2>LICENSE</h2>
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<div class="sectionbody">
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<p>Cpuset is licensed under the GNU GPL V2 only.</p>
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</div>
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<h2>COPYRIGHT</h2>
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<div class="sectionbody">
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<p>Copyright (c) 2008 Novell Inc.</p>
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</div>
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<h2>AUTHOR</h2>
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<div class="sectionbody">
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<p>Written by Alex Tsariounov <alext@novell.com>.</p>
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<p>Some substrate code and ideas were taken from the excellent Stacked
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GIT (stgit) v0.13 (see http://gna.org/projects/stgit and
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http://www.procode.org/stgit). Stacked GIT is under GPL V2 or later.</p>
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</div>
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<h2>SEE ALSO</h2>
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<div class="sectionbody">
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<p><a href="cset-set.html">cset-set(1)</a>, <a href="cset-proc.html">cset-proc(1)</a>, <a href="cset-shield.html">cset-shield(1)</a>, <a href="taskset.html">taskset(1)</a>,
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<a href="chrt.html">chrt(1)</a></p>
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<p>/usr/src/linux/Documentation/cpusets.txt</p>
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</div>
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<div id="footer">
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<div id="footer-text">
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Version 1.0<br />
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Last updated 30-May-2008 14:33:24 MDT
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</div>
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</div>
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</body>
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</html>
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