Messages in this thread | | | From | Con Kolivas <> | Subject | Re: Scheduler fairness problem on 2.6 series (Attn: Nick Piggin and others) | Date | Thu, 12 Aug 2004 12:53:57 +1000 |
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spaminos-ker@yahoo.com writes:
> --- Con Kolivas <kernel@kolivas.org> wrote: >> >> Hi >> >> I tried this on the latest staircase patch (7.I) and am not getting any >> output from your script when tested up to 60 threads on my hardware. Can you >> try this version of staircase please? >> >> There are 7.I patches against 2.6.8-rc4 and 2.6.8-rc4-mm1 >> >> http://ck.kolivas.org/patches/2.6/2.6.8/ >> >> Cheers, >> Con >> >> > > One thing to note is that I do get a lot of output from the script if I set > interactive to 0 (delays between 3 and 13 seconds with 60 threads).
Sounds fair.
With interactive==0 it will penalise tasks during their bursts of cpu usage in the interest of fairness, and your script effectively is BASH doing a burst of cpu so 3-13 second delays when the load is effectively >60 is pretty good.
Cheers, Con
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