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SubjectRe: AIM7 40% regression with 2.6.26-rc1


On Thu, 8 May 2008, Zhang, Yanmin wrote:
>
> I collected oprofile data. It looks not useful, as cpu idle is more than 50%.

Ahh, so it's probably still the BKL that is the problem, it's just not in
the file locking code. The changes to fs/locks.c probably didn't matter
all that much, and the additional regression was likely just some
perturbation.

So it's probably fasync that AIM7 tests. Quite possibly coupled with
/dev/tty etc. No file locking.

Linus


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