Messages in this thread | | | Date | Fri, 9 May 2008 07:03:14 -0500 | From | Paul Jackson <> | Subject | Re: IRQ affinities (was: boot cgroup questions) |
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Peter wrote: > I see two use-cases: > > - Isolation > - NUMA node devices
Ok ... so let me propose an entirely different solution.
No doubt it has some terrible flaw, but I'll just have to await your replies to see what that is.
How about we have:
1) Yet another text config file in /etc, this one containing lines having two fields: * a list of IRQs, and * a cpumask. This file would specify which CPUs should handle which IRQs.
2) A utility that can be run, after changing the above file, to poke the proper cpumask to each IRQ, as specified in the file.
(Obligatory "simple" marketing claim: the above requires no kernel changes.)
What am I missing?
-- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson <pj@sgi.com> 1.940.382.4214
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