Messages in this thread | | | Date | Mon, 31 Mar 2003 04:26:55 +0200 | From | Mike Galbraith <> | Subject | Re: 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
- 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/
| |