On Monday 05 January 2009 14:04:04 Martin Gräßlin wrote:
> The problem of too many wakeups is solved in KDE 4.2 being released this
> month. KWin will be idle and don't wake up if nothing has to be painted.
> I just did the test and KWin is at about 8 wakeups per second when being
> idle.
Awesome! Thanks Martin.
> Nevertheless my nvidia binary blob is still responsible for 60 wakeups
> per second when compositing is enabled. I have no idea if this can be
> improved (I guess no) and I don't know if this is the same for other
> drivers.
There's a config option for Xorg/Nvidia:
Option "OnDemandVBlankInterrupts" "True"
that will fix that for you.
Other drivers don't have this problem (well at least my intel doesn't).
--
powertop shows kwin generating lots of wakeups (intrepid, kde4)
https://bugs.launchpad.net/bugs/283100
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