Messages in this thread |  | | | Date | Mon, 17 Nov 2008 12:18:44 -0800 (PST) | | Subject | Re: [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 | | From | David Miller <> |
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From: Linus Torvalds <torvalds@linux-foundation.org> Date: Mon, 17 Nov 2008 11:57:55 -0800 (PST)
> 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.
> 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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