Re: [PATCHSET] workqueue: reimplement CPU hotplug to keep idleworkers

[Tejun Heo]

Hello,

On Fri, Jul 20, 2012 at 08:22:30PM +0200, Peter Zijlstra wrote:
> I really think people who use hotplug at high frequencies are on drugs
> and doing it wrong.

I don't know.  It does make some sense.  It's not like we have any
other mechanism to keep some processors completely quiesient, which
could make a noticeable difference from powersaving POV compared to
mostly idle.  Rafael, can you please chime in and explain how / where
/ how freqeuntly / etc CPU hotplug is used for powersaving?

Thanks.

-- 
tejun
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