Messages in this thread | | | From | Perry Harrington <> | Subject | Re: increasing page size | Date | Thu, 9 Jul 1998 18:08:10 -0700 (PDT) |
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Adding processor affinity should be straightforward. I believe that Linux only has 1 process queue right now. The most performance oriented method to do this would be to move the process to a processor specific queue. Reality dictates that you will incurr more contention on the process queue with the more processors you have.
--Perry
> > : Does Mr McVoy by any chance happen to have an "is L2 cache shared" detector > : lurking in the lmbench and other magic ? > > Hmm. Not as such. I could probably make one. It would be a lot easier > if Linux had a pin() function which pinned a process to a processor. > SGI's interface looks like: > > sysmp(MP_MUSTRUN, cpuNumber); > > If I had that sucker, then I could pin two processes to two different > processors, timing how long it took to touch powers of two size arrays > with one process, then do the same thing with two processes. It shouldn't > make any difference until you get out to >L2$ sizes if the caches are > unshared. > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.rutgers.edu >
-- Perry Harrington Linux rules all OSes. APSoft () email: perry@apsoft.com Think Blue. /\
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