Messages in this thread | | | Date | Thu, 28 Aug 2008 18:25:48 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 6/6] sched: disabled rt-bandwidth by default |
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* Max Krasnyansky <maxk@qualcomm.com> wrote:
> Andi Kleen wrote: >> On Thu, Aug 28, 2008 at 01:19:13PM +0200, Peter Zijlstra wrote: >>> On Thu, 2008-08-28 at 13:09 +0200, Andi Kleen wrote: >>>>> Even if the system has multiple CPUs, and even if just a single CPU is >>>>> fully utilized by an RT task, without the rt-limit the system will still >>>>> lock up in practice due to various other factors: workqueues and tasks >>>>> being 'stuck' on CPUs that host an RT hog. >>>> The load balancer will not notice that a particular CPU is busy >>>> with real time tasks? >>> Not currently, working on that though. >> >> I wonder if it would make sense to break affinities in extreme case? >> With that even the workqueues would work again. > > Please lets not break affinity :).
correct, breaking affinity is a rather stupid idea.
Ingo
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