Groups > comp.os.linux.development.system > #283

how to limit CPU usage for a process ands its child (or for a user)

From	nicolas.antoniazzi@gmail.com
Newsgroups	comp.os.linux.development.system
Subject	how to limit CPU usage for a process ands its child (or for a user)
Date	2011-09-28 08:12 -0700
Organization	http://groups.google.com
Message-ID	<24023658.1657.1317222741913.JavaMail.geo-discussion-forums@yqmw31> (permalink)

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Hello,

I would like to know if there is a way to limit CPU usage of a process and its child.
I used setrlimit with RLIMIT_CPU, but all child process inherit from the same value as the parent.

If I limit a process P0 to 2s, and P0 fork() 2 children (P1 and P2), P1 and P2 will have 2 new seconds of cpu time too.
I would like a global CPU time for all my process from P0 and not 2s for each.

A fork bomb can easily eat all CPU with this method. (I know that I can limit the number of process, but this is not the same usage).

Is there a way to control this ? Or is it possible to limit CPU per user instead of per process ?

Thanks.

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how to limit CPU usage for a process ands its child (or for a user) nicolas.antoniazzi@gmail.com - 2011-09-28 08:12 -0700
  Re: how to limit CPU usage for a process ands its child (or for a user) John Reiser <jreiserfl@comcast.net> - 2011-09-28 09:08 -0700
  Re: how to limit CPU usage for a process ands its child (or for a user) "Ersek, Laszlo" <lacos@caesar.elte.hu> - 2011-09-28 23:33 +0200
    Re: how to limit CPU usage for a process ands its child (or for a user) nicolas.antoniazzi@gmail.com - 2011-09-28 16:44 -0700

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