On Thu, Nov 18, 2010 at 22:08:27 +0100, Julien Cristau wrote: > I think I mentioned this a while back on irc, but filing here for > reference. clock_gettime(CLOCK_MONOTONIC) is expensive, so people want > to use CLOCK_MONOTONIC_COARSE instead. See e.g. > http://lists.x.org/pipermail/xorg-devel/2010-August/012483.html > However X would like millisecond granularity, which means HZ=1000 > instead of the current 250, in order to be able to use the coarse timer. > Maybe something to consider for wheezy? > Patch is now in xserver master: http://cgit.freedesktop.org/xorg/xserver/commit/?id=44adb31bfece29260a9bbd9075c9212ebf00d24d
It only uses CLOCK_MONOTONIC_COARSE if its resolution is sub-millisecond. Cheers, Julien
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