From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Mon, 17 Nov 2008 11:57:55 -0800 (PST)

quoted text
> On Mon, 17 Nov 2008, David Miller wrote:
> > And as a result I found that wake_up() is now 4 times slower than it
> > was in 2.6.22, I even analyzed this for every single kernel release
> > till now.
> 
> ..and that's the one where you then pointed to hrtimers, and now you claim 
> that was fixed?

That was a huge increase going from 2.6.26 to 2.6.27, and has
been fixed.

The rest of the gradual release-to-release cost increase, however,
remains.

quoted text
> At least I haven't seen any new analysis since then.

I will find time ot make it after I get back from Portland.
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