Messages in this thread |  | | | Date | Mon, 3 Mar 2008 22:34:02 -0800 | | From | "Paul Menage" <> | | Subject | Re: [RFC/PATCH] cpuset: cpuset irq affinities |
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On Mon, Mar 3, 2008 at 10:26 PM, Paul Jackson <pj@sgi.com> wrote: > Paul M wrote: > > Except that this isn't currently possible if you're also trying to do > > memory hardwalling on those cpusets, since then sibling cpusets can't > > share memory nodes. > > Yes, there would be interactions, on both the CPU and Memory side with > some second order mechanisms (hardwalls and sched domains.) > > Still, I ask, where's the beef -- the real users? >
I'm one such user who's been forced to add the mem_hardwall flag to get around the fact that exclusive and hardwall are controlled by the same flag. I keep meaning to send it in as a patch but haven't yet got round to it.
Also, if you're using fake numa for memory isolation (which we're experimenting with) then the correlation between cpu placement and memory placement is much much weaker, or non-existent.
Paul
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