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578 lines
13 KiB
HTML
578 lines
13 KiB
HTML
15 years ago
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include1::./stylesheets/xhtml11-manpage.css[]
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/* Workarounds for IE6's broken and incomplete CSS2. */
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div.sidebar-content {
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margin-bottom: 0.5em;
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div.listingblock div.content {
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background: #f4f4f4;
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padding: 0.5em;
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}
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div.quoteblock-content {
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padding-left: 2.0em;
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/* IE6 sets dynamically generated links as visited. */
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div#toc a:visited { color: blue; }
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</style>
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<title>cset-proc(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-proc(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-proc -
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manage processes running in cpusets
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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> [cset options] <em>proc</em> [proc options] [args]
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<em>cset</em> proc --help
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<em>cset</em> proc
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<em>cset</em> proc my_set my_other_set
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<em>cset</em> proc --list --set my_set
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<em>cset</em> proc --exec my_set /opt/software/my_code --my_opt_1
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<em>cset</em> proc --set my_set --exec /opt/software/my_code --my_opt_1
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<em>cset</em> proc --move 2442,3000-3200 my_set
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<em>cset</em> proc --move --pid=2442,3000-3200 --toset=my_set
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<em>cset</em> proc --move --fromset=my_set_1 --toset=my_set_2
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<em>cset</em> proc --move --pid=42 --fromset=/group1/myset --toset=/group2/yourset</div></div>
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</div>
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<h2>OPTIONS</h2>
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<div class="sectionbody">
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<dl>
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<dt>
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-h, --help
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</dt>
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<dd>
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<p>
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prints the list of options for this command
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</p>
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</dd>
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<dt>
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-l, --list
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</dt>
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<dd>
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<p>
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list processes in the specified cpuset
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</p>
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</dd>
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<dt>
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-e, --exec
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</dt>
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<dd>
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<p>
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execute arguments in the specified cpuset
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</p>
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</dd>
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<dt>
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-u USER, --user=USER
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</dt>
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<dd>
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<p>
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use this USER to --exec (id or name)
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</p>
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</dd>
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<dt>
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-g GROUP, --group=GROUP
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</dt>
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<dd>
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<p>
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use this GROUP to --exec (id or name)
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</p>
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</dd>
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<dt>
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-m, --move
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</dt>
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<dd>
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<p>
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move specified tasks to specified cpuset; to move a PIDSPEC to a
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cpuset, use -m PIDSPEC cpuset; to move all tasks specify --fromset
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and --toset
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</p>
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</dd>
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<dt>
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-p PIDSPEC, --pid=PIDSPEC
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</dt>
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<dd>
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<p>
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specify pid or tid specification
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</p>
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</dd>
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<dt>
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-s CPUSET, --set=CPUSET
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</dt>
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<dd>
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<p>
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specify name of immediate cpuset
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</p>
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</dd>
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<dt>
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-t TOSET, --toset=TOSET
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</dt>
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<dd>
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<p>
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specify name of destination cpuset
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</p>
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</dd>
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<dt>
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-f FROMSET, --fromset=FROMSET
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</dt>
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<dd>
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<p>
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specify name of origination cpuset
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</p>
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</dd>
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<dt>
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-k, --kthread
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</dt>
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<dd>
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<p>
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move, or include moving, unbound kernel threads
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</p>
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</dd>
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<dt>
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-a, --all
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</dt>
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<dd>
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<p>
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force all processes and threads to be moved
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</p>
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</dd>
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<dt>
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-v, --verbose
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</dt>
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<dd>
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<p>
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prints more detailed output, additive
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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>DESCRIPTION</h2>
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<div class="sectionbody">
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<p>This command is used to run and manage arbitrary processes on
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specified cpusets. It is also used to move pre-existing processes and
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threads to specified cpusets. You may note there is no "kill" or
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"destroy" option — use the standard OS ^C or kill commands for that.</p>
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<p>To list which tasks are running in a particular cpuset, use the --list
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command.</p>
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<p>For example:</p>
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<p><strong><tt># cset proc --list --set priset</tt></strong></p>
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<p>This command will list all the tasks running in the cpuset called
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"priset".</p>
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<p>Processes are created by specifying the path to the executable
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and specifying the cpuset that the process is to be created in.</p>
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<p>For example:</p>
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<p><strong><tt># cset proc --set=blazing_cpuset --exec /usr/bin/fast_code</tt></strong></p>
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<p>This command will execute the /usr/bin/fast_code program on the
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"blazing_cpuset" cpuset.</p>
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<p>The PIDSPEC argument taken for the move command is a comma
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separated list of PIDs or TIDs. The list can also include
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brackets of PIDs or TIDs (i.e. tasks) that are inclusive of the
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endpoints.</p>
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<p>For example:</p>
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<div class="literalblock">
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||
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<div class="content">
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<pre><tt>1,2,5 Means processes 1, 2 and 5
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1,2,600-700 Means processes 1, 2 and from 600 to 700</tt></pre>
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</div></div>
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<div class="admonitionblock">
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||
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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">The range of PIDs or TIDs does not need to have every
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position populated. In other words, for the example above, if
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there is only one process, say PID 57, in the range of 50-65,
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then only that process will be moved.</td>
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</tr></table>
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</div>
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<p>To move a PIDSPEC to a specific cpuset, you can either specify
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the PIDSPEC with --pid and the destination cpuset with --toset,
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or use the short hand and list the cpuset name after the PIDSPEC
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for the --move arguments.</p>
|
||
|
<p>The move command accepts multiple common calling methods.
|
||
|
For example, the following commands are equivalent:</p>
|
||
|
<p><strong><tt># cset proc --move 2442,3000-3200 reserved_set</tt></strong></p>
|
||
|
<p><strong><tt># cset proc --move --pid=2442,3000-3200 --toset=reserved_set</tt></strong></p>
|
||
|
<p>These commands move the tasks defined as 2442 and any running task
|
||
|
between 3000 and 3200 inclusive of the ends to the cpuset called
|
||
|
"reserved_set".</p>
|
||
|
<p>Specifying the --fromset is not necesary since the tasks will be
|
||
|
moved to the destination cpuset no matter which cpuset they are
|
||
|
currently running on.</p>
|
||
|
<div class="admonitionblock">
|
||
|
<table><tr>
|
||
|
<td class="icon">
|
||
|
<div class="title">Note</div>
|
||
|
</td>
|
||
|
<td class="content">However, if you do specify a cpuset with the --fromset
|
||
|
option, then only those tasks that are both in the PIDSPEC <strong>and</strong>
|
||
|
are running in the cpuset specified by --fromset will be moved.
|
||
|
I.e., if there is a task running on the system but not in
|
||
|
--fromset that is in PIDSPEC, it will not be moved.</td>
|
||
|
</tr></table>
|
||
|
</div>
|
||
|
<p>To move all userspace tasks from one cpuset to another, you need
|
||
|
to specify the source and destination cpuset by name.</p>
|
||
|
<p>For example:</p>
|
||
|
<p><strong><tt># cset proc --move --fromset=comp1 --toset=comp42</tt></strong></p>
|
||
|
<p>This command specifies that all processes and threads
|
||
|
running on cpuset "comp1" be moved to cpuset "comp42".</p>
|
||
|
<div class="admonitionblock">
|
||
|
<table><tr>
|
||
|
<td class="icon">
|
||
|
<div class="title">Note</div>
|
||
|
</td>
|
||
|
<td class="content">This move command will not move kernel threads unless
|
||
|
the -k/--kthread switch is specified. If it is, then all unbound
|
||
|
kernel threads will be added to the move. Unbound kernel threads
|
||
|
are those that can run on any CPU. If you <strong>also specify</strong> the
|
||
|
-a/--all switch, then all tasks, kernel or not, bound or not,
|
||
|
will be moved.</td>
|
||
|
</tr></table>
|
||
|
</div>
|
||
|
<div class="admonitionblock">
|
||
|
<table><tr>
|
||
|
<td class="icon">
|
||
|
<div class="title">Caution</div>
|
||
|
</td>
|
||
|
<td class="content">Please be cautious with the --all switch, since moving a
|
||
|
kernel thread that is bound to a specific CPU to a cpuset that
|
||
|
does not include that CPU can cause a system hang.</td>
|
||
|
</tr></table>
|
||
|
</div>
|
||
|
<p>You must specify unique cpuset names for the both exec and move
|
||
|
commands. If a simple name passed to the --fromset, --toset and
|
||
|
--set parameters is unique on the system then that command
|
||
|
executes. However, if there are multiple cpusets by that name,
|
||
|
then you will need to specify which one you mean with a full path
|
||
|
rooted at the base cpuset tree.</p>
|
||
|
<p>For example, suppose you have the following cpuset tree:</p>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre><tt>/cpusets
|
||
|
/group1
|
||
|
/myset
|
||
|
/yourset
|
||
|
/group2
|
||
|
/myset
|
||
|
/yourset</tt></pre>
|
||
|
</div></div>
|
||
|
<p>Then, to move a process from myset in group1 to yourset in
|
||
|
group2, you would have to issue the following command:</p>
|
||
|
<p><tt># cset proc --move --pid=50 --fromset=/group1/myset --toset=/group2/yourset</tt></p>
|
||
|
<p>You do not have to worry about where in the Linux filesystem the
|
||
|
cpuset filesystem is mounted. The cset command takes care of that.
|
||
|
Any cpusets that are specifed by path (such as above), are done with
|
||
|
respect to the root of the cpuset filesystem.</p>
|
||
|
</div>
|
||
|
<h2>LICENSE</h2>
|
||
|
<div class="sectionbody">
|
||
|
<p>Cpuset is licensed under the GNU GPL V2 only.</p>
|
||
|
</div>
|
||
|
<h2>COPYRIGHT</h2>
|
||
|
<div class="sectionbody">
|
||
|
<p>Copyright (c) 2008 Novell Inc.</p>
|
||
|
</div>
|
||
|
<h2>AUTHOR</h2>
|
||
|
<div class="sectionbody">
|
||
|
<p>Written by Alex Tsariounov <alext@novell.com>.</p>
|
||
|
<p>Some substrate code and ideas were taken from the excellent Stacked
|
||
|
GIT (stgit) v0.13 (see http://gna.org/projects/stgit and
|
||
|
http://www.procode.org/stgit). Stacked GIT is under GPL V2 or later.</p>
|
||
|
</div>
|
||
|
<h2>SEE ALSO</h2>
|
||
|
<div class="sectionbody">
|
||
|
<p><a href="cset.html">cset(1)</a>, <a href="cset-set.html">cset-set(1)</a>, <a href="cset-shield.html">cset-shield(1)</a>, <a href="taskset.html">taskset(1)</a>,
|
||
|
<a href="chrt.html">chrt(1)</a></p>
|
||
|
<p>/usr/src/linux/Documentation/cpusets.txt</p>
|
||
|
</div>
|
||
|
<div id="footer">
|
||
|
<div id="footer-text">
|
||
|
Version 1.0<br />
|
||
|
Last updated 30-May-2008 14:33:23 MDT
|
||
|
</div>
|
||
|
</div>
|
||
|
</body>
|
||
|
</html>
|