Messages in this thread | | | Date | Mon, 31 Mar 2003 00:51:38 +0200 | From | Michal Schmidt <> | Subject | Re: Reproducible terrible interactivity since 2.5.64bk2 |
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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.
Michal
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