Messages in this thread | | | Date | Thu, 28 Mar 2013 11:13:32 -0700 | From | Tejun Heo <> | Subject | Re: [PATCH V3 3/7] workqueue: Add helpers to schedule work on any cpu |
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On Thu, Mar 21, 2013 at 11:29:37AM -0700, Tejun Heo wrote: > Yes, I actually like that part a lot although I do wish the idle check > was inlined. > > What I'm wondering is whether the kinda out-of-band decision via > sched_select_cpu() is justified given that it can and is likely to go > through full scheduling decision anyway. For timer, we don't have > that, so it makes sense. For work items, it's a bit different. > > To rephrase, *if* the scheduler can't already make proper decisions > regarding power consumption on an idlish system, maybe it can be > improved to do so? It could as well be that this CPU selection is > special enough that it's just better to keep it separate as this > patchset proposes. This is something up to the scheduler people. > Peter, Ingo, what do you guys think?
Ping. Peter, Ingo?
Viresh, would it be difficult to make another measurement of the same workload with the said workqueues converted to unbound? I think that would at least provide a nice reference point.
Thanks.
-- tejun
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