Messages in this thread Patch in this message | | | Date | Mon, 10 Nov 2003 08:46:19 +0100 (CET) | From | Ingo Molnar <> | Subject | Re: [PATCH] Fix find busiest queue 2.6.0-test9 |
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On Sun, 9 Nov 2003, Davide Libenzi wrote:
> Maybe something like: > > * We fend off statistical fluctuations in runqueue lengths by > * saving the runqueue length (as seen by the balancing CPU) during the > * previous load-balancing operation and using the smaller one the current > * and saved lengths.
yep, agreed - patch for 2.6.1 attached. (I also fixed a typo in the original comment and reformatted the lines) Anything else?
Ingo
--- kernel/sched.c.orig +++ kernel/sched.c @@ -1061,10 +1061,11 @@ * the lock held. * * We fend off statistical fluctuations in runqueue lengths by - * saving the runqueue length during the previous load-balancing - * operation and using the smaller one the current and saved lengths. - * If a runqueue is long enough for a longer amount of time then - * we recognize it and pull tasks from it. + * saving the runqueue length (as seen by the balancing CPU) during + * the previous load-balancing operation and using the smaller one + * of the current and saved lengths. If a runqueue is long enough + * for a longer amount of time then we recognize it and pull tasks + * from it. * * The 'current runqueue length' is a statistical maximum variable, * for that one we take the longer one - to avoid fluctuations in - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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