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SubjectRe: 2.6.26-rc9: Reported regressions from 2.6.25
Hi!

> > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10919
> > Subject : [regression] display dimming is slow and laggy - Acer Travelmate 661lci
> > Submitter : Maximilian Engelhardt <maxi@daemonizer.de>
> > Date : 2008-06-14 22:31 (23 days old)
> > References : http://marc.info/?l=linux-kernel&m=121348428828320&w=4
>
> I wonder if this one could be related. The 'nr_zones' overwriting bug
> would result in kswapd not reclaiming any memory asynchronously, so the
> kernel would basically be constantly under a low-memory situation, and
> processes would be forced to do synchronous reclaim.
>
> That, in turn, could easily explain laggy operation, especially if it is
> something bigger that needs to allocate new memory (not that I know if X
> dimming needs to, but I could imagine that it does some double buffering
> or whatever).

Hmm, but that would mean whole system is slow, right?

I'd bet this is ACPI EC problem...
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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