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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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