Messages in this thread Patch in this message | | | Subject | Re: [BENCHMARK] scheduler tunables with contest - prio_bonus_ratio | From | Robert Love <> | Date | 19 Dec 2002 18:53:16 -0500 |
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On Thu, 2002-12-19 at 18:42, Con Kolivas wrote:
> I guess this explains why my variable timeslice thingy in -ck helps on the > desktop. Basically by shortening the timeslice it is masking the effect of > the interactivity estimator under load. That is, it is treating the symptoms > of having an interactivity estimator rather than tackling the cause.
You would probably get the same effect or better by setting prio_bonus_ratio lower (or off).
Setting it lower will also give less priority bonus/penalty and not reinsert the tasks so readily into the active array.
Something like the attached patch may help...
Robert Love
--- linux-2.5.52/kernel/sched.c 2002-12-19 18:47:53.000000000 -0500 +++ linux/kernel/sched.c 2002-12-19 18:48:05.000000000 -0500 @@ -66,8 +66,8 @@ int child_penalty = 95; int parent_penalty = 100; int exit_weight = 3; -int prio_bonus_ratio = 25; -int interactive_delta = 2; +int prio_bonus_ratio = 5; +int interactive_delta = 1; int max_sleep_avg = 2 * HZ; int starvation_limit = 2 * HZ;
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