Messages in this thread | | | Subject | Re: PREEMPT_RT and latency_trace | From | Daniel Walker <> | Date | Fri, 08 Jul 2005 06:40:07 -0700 |
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On Fri, 2005-07-08 at 14:49 +0200, Serge Noiraud wrote: > Hi, > > I have a big dilemna on one machine : > I run a task with RT priority which make a loop to mesure the system > perturbation. > It works well except on one machine. > On a multi-cpu, If I run the program on cpu 1, I get 23us. It's OK. > If I run the same program on cpu 0, I get 17373us !
If it's not at RT priority 99 , then your application could be held off until higher priority applications have run. 17373us is a pretty long hold off time though .
Daniel
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