[CentOS] processor affinity

Adam Grossman adam.grossman at devitron.com
Wed Feb 17 18:26:54 UTC 2010


On Wed, 2010-02-17 at 18:17 +0000, Simon Billis wrote:
> Adam Grossman sent a missive on 2010-02-17:
> 
> > Hello,
> > 
> > i am running CentOS 5.4.  i have a requirement where i need to have 1
> > application have a single processor all to its self, and the rest of the
> > system run on the other processors.  "taskman" lets me bind the process
> > to a processor(s), but it does not make it exclusive.   Is this possible
> > to do? i have even tried mucking around with the rc.sysinit, but to no
> > avail.
> > 
> > thank you very much,
> Have you considered running through the pids of the all tasks and then using
> taskset to change their affinities. You could also change all the init
> scripts to invoke the process using something like "taskset -p [mask] [pid]"
> and limit the mask to only the first few CPU's that you want them to have
> access to.
> 

that's probably a good idea.  have it be the last service that runs
which moves everything to the processors i want.  i am going to give
that an try.

thank you very much,
-=- adam grossman



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