Re: High CPU load when machine is idle (related to PROBLEM: Unusually high load average when idle in 2.6.35, 2.6.35.1 and later)

tmhikaru
2010-11-10T02:38:07Z

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On Tue, Nov 09, 2010 at 08:02:28PM +0100, Peter Zijlstra wrote:
> On Tue, 2010-11-09 at 13:55 -0500, Kyle McMartin wrote:
> > On Fri, Oct 29, 2010 at 09:42:23PM +0200, Peter Zijlstra wrote:
> > >
> > > not tested other than compile, but how does that look...?
> > >
> >
> > Hi Peter,
> >
> > I finally got around to building a test kernel for a user who had been
> > reporting this against F-14 (2.6.35) but they report there's not much
> > improvement.
> >
> > Sorry. :/
>
> Right, I tested it myself yesterday and got similar results. Does the
> 'simple' patch from a few posts back work for people?
>
> http://lkml.org/lkml/2010/10/26/150
>
> If that does work I fudged the fancy math, if that doesn't work either
> we're back to square zero.

I seem to remember someone saying this would only work on x86-64; if this is
meant to work with a 32bit intel single core processor, please let me know -
I'd like to try it. It would also help if I knew which kernel version this
simpler patch is meant to apply to.

Thank you,
Tim McGrath

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