Messages in this thread | | | Date | Sun, 21 Nov 2004 15:32:34 +0100 | From | Ingo Molnar <> | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.29-0 |
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* Ingo Molnar <mingo@elte.hu> wrote:
> > So i don't really know how to go about this. I suppose i just run > > PREEMPT kernels instead of PREEMPT_REALTIME. Maybe it's the overhead > > which is killing jackd performance with PREEMPT_REALTIME, but i don't > > believe so (50ms? nah!). > > agreed, no way can 50msec be related to overhead.
there's one exception: if the RT workload is _just_ below 100% CPU utilization, then PREEMPT_RT's overhead could push it above 100% and trigger CPU overload, with big delays. What is the maximum CPU usage during the test, while the system is otherwise idle?
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