Messages in this thread | | | Date | Wed, 19 Nov 2008 12:17:38 -0800 | From | Max Krasnyansky <> | Subject | Re: RT sched: cpupri_vec lock contention with def_root_domain and no load balance |
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Dimitri Sivanich wrote: > On Wed, Nov 19, 2008 at 11:49:36AM -0800, Max Krasnyansky wrote: >> I think the idea is that we want to make balancer a noop on those processors. > > Ultimately, making the balancer a noop on processors with load balancing turned off would be the best solution. Yes. I forgot to point out that if we do change cpusets to generate sched domain per cpu we want to make sure that balancer is still a noop just like it is today with the null sched domain.
>> We could change cpusets code to create a root sched domain for each cpu I >> guess. But can we maybe scale cpupri some other way ? > > It doesn't make sense to me that they'd have a root domain attached that spans more of the the system than that cpu. I think 'root' in this case is a bit of a misnomer. What I meant is that each non-balanced cpu would be in a separate sched domain.
Max
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