Re: [PATCH V3 3/7] workqueue: Add helpers to schedule work on any cpu

[Tejun Heo]

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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