Messages in this thread | | | Subject | Re: [ckrm-tech] Re: [RFC][PATCH 3/9] CPU controller - Adds timeslice scaling | From | Mike Galbraith <> | Date | Fri, 21 Apr 2006 14:03:49 +0200 |
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On Fri, 2006-04-21 at 20:50 +0900, Naoaki MAEDA wrote:
> It was not good explanation. Let me restate that. > The effect of shortening timeslice is to let the task be expired soon > by shortening > its remainder timeclice, so it still works even if the task consome very small > timeslice at one time. However, expired TASK_INTERACTIVE tasks will be requeued > to the active for a while by the scheduler, so shortening timeslice > doesn't work well for > TASK_INTERACTIVE tasks.
Yeah, understood. This shortening of timeslice I think is generally bad, (hmm...) though in an environment where preemption is rampant, this shortening of slice should lead to a throughput gain for low ranking _interdependent_ tasks. Is that what you're trying to accomplish? To reduce latency at the bottom in the face of preemption from above?
-Mike
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