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SubjectRe: Reproducible terrible interactivity since 2.5.64bk2
At 12:51 AM 3/31/2003 +0200, Michal Schmidt wrote:
>Mike Galbraith wrote:
>>Greetings potential victims :)
>>Care to see if the attached cures your woes?
>>This is a mixture of Ingo's last posted plus the scheduler tuning knobs
>>patch (/proc/sys/sched/*). I added three new knobs to watch the effect
>>on different loads. max_accel_slices limits the amount of sleep_time you
>>may add in one activation. retard_prct_slices is a percentage of a slice
>>to deduct from sleep_time each activation (negative feedback for heavy
>>context switchers.. dang irman process_load). force_switch is there
>>because I'm playing :) I didn't do much to the scheduler itself, only
>>made it switch arrays in something closer to a square wave. With the
>>settings as in the patch, and running a kernel build, top and irman,
>>irman reports worst case response times of 150ms for NULL load, 316ms for
>>memory_load, 414 for io_load, and 504ms for process_load.
>>Anyway, it's attached if you want to play with it ;-)
>> -Mike
>>Oh, it's against virgin 2.5.66.
>
>
>Thanks, running 2.5.66 with the patch applied I could no more reproduce
>the problem. I haven't tried playing with the knobs.

Thanks for the info.

-Mike

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