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Erik — Tue, 02 Jun 2009 03:19:51 GMT

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[[Category:Tips]]

== CPU / Performance Limits ==

To set limits on users (e.g. CPU usage), use <code>ulimit</code>.

EXAMPLE: <code>ulimit -t;</code>

From the manpage:
<code>-a</code> All current limits are reported 
<code>-c</code> The maximum size of core files created 
<code>-d</code> The maximum size of a process's data segment 
<code>-f</code> The maximum size of files created by the shell 
<code>-i</code> The maximum number of pending signals 
<code>-l</code> The maximum size that may be locked into memory 
<code>-m</code> The maximum resident set size 
<code>-n</code> The maximum number of open file descriptors (most systems do not allow this value to be set) 
<code>-p</code> The pipe size in 512-byte blocks (this may not be set) 
<code>-q</code> The maximum number of bytes in POSIX message queues 
<code>-s</code> The maximum stack size 
<code>-t</code> The maximum amount of cpu time in seconds 
<code>-u</code> The maximum number of processes available to a single user 
<code>-v</code> The maximum amount of virtual memory available to the shell 
<code>-x</code> The maximum number of file locks 

== Disk Space Limits ==

Use <code>quota</code>.

CPU User Limiting - Revision history

Erik: Copy from old