2008/12/26 Peter Clifton <[email protected]>: > Hi guys, > > I've been profiling some speed differences rendering pixel aligned > (should be fast-path) cairo drawing, and happened across the fact that > for my redraw test (which is running flat out), 13% of my total system > time is spent in dixLookupPrivate. > > Is there anything which can be done to avoid the overhead of > dixLookupPrivate? > > The overhead is spread over a number of callers, the top few being: > > exaPixmapIsOffscreen (Total 3.43%) > exaDoMoveInPixmap (Total 1.82%) > exaDoMigration (Total 1.17%) > > Now whether this is simply because my cairo rendering is slow, and > causing lots of migration I don't know.. but I thought it would be of > interest here. > > This is made with the Intel driver at the tip of the 1.6 branch, using > EXA acceleration. > > Best wishes, >
Perhaps you're struck by this bug: http://bugs.freedesktop.org/show_bug.cgi?id=16647 Regards, Erik > -- > Peter Clifton > > Electrical Engineering Division, > Engineering Department, > University of Cambridge, > 9, JJ Thomson Avenue, > Cambridge > CB3 0FA > > Tel: +44 (0)7729 980173 - (No signal in the lab!) > > _______________________________________________ > xorg mailing list > [email protected] > http://lists.freedesktop.org/mailman/listinfo/xorg > _______________________________________________ xorg mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/xorg
