Messages in this thread | | | Subject | Re: [patch 2/2] sched: fix select_idle_sibling() logic in select_task_rq_fair() | From | Suresh Siddha <> | Date | Mon, 08 Mar 2010 14:24:22 -0800 |
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On Fri, 2010-03-05 at 12:25 -0800, Mike Galbraith wrote: > On Fri, 2010-03-05 at 10:39 -0800, Suresh Siddha wrote: > > plain text document attachment (fix_lat_ctx.patch) > > Performance improvements with this patch: > > "lat_ctx -s 0 2" ~22usec (before-this-patch) ~5usec (after-this-patch) > > Hm. On my Q6600 box, it's nowhere near that.
My numbers are based on an atom netbook.
> Calling the waking cpu idle in that case is a mistake. Just because the > sync hint was used does not mean there is no gain to be had.
Ok. I dropped that part in v2 patches that I just posted.
thanks, suresh
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