Messages in this thread | | | Subject | Re: Scheduler queues for less os-jitter? | From | Mike Galbraith <> | Date | Sun, 04 Nov 2012 05:41:48 -0700 |
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On Sun, 2012-11-04 at 10:20 +0100, Uwaysi Bin Kareem wrote: > Ok, anyway realtime processes did not work quite as expected. > ("overloaded" machine, even though cpu-time is only 10%). So I guess I > have to enable cgroups and live with the overhead then. > > If I set cpu-limits there, does that involve an absolute value, or is it > normalized, so that even if I do 0.001% cpu for processes, they get all > cpu, when there is nothing running?
See Documentation/cgroups. Between cgroups, cpusets, scheduler classes and priorities, you have heaping truckloads of control over what runs where and when. The missing element in your low jitter quest is a desktop and applications that were written for realtime performance.
-Mike
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