> > > On E, 2010-07-26 at 14:31 +0200, Christophe Lindheimer wrote: > > Hi. > > > > My prob is just that I had much better perfomances with my old > > system... > > > Yes, and what are your typical use cases. What programs and operations > are slow. Just the desktop environment in general, I assume. > Hard to say. The issue I see is on a big soft running in full screen on a simple X Server. As I have a lot of text on the screen, I chose to test the -rgbftext But my knowledge on X is rather limited...
> > > > I run a x11perf -rgbftext. > > Old config :81300 / s > > New config : 36000 / s > > Are you sure -rgbftext measures what is important? > I guess it measures no anti-aliasing text drawing, not sure how we fare > there with the optimized code (that isn't in 2.11.8 or even GIT yet). > Is your desktop really configured to no anti-aliasing at all? We > typically benchmark the common case with x11perf -aa10text and x11perf > -aa24text for anti-aliased text > > In the future it will be important for speed to not use subpixel > smoothing (the anti-aliasing style, that takes advandance of the fact > that LCD screens are made of red, green and blue subpixels), as that we > won't be able to accelerate anytime soon (if ever). > > > But I guess (and hope) that Mart's analysis is OK and that the > > performances will get much better once the driver will be fully > > optimized... > > Meanwhile you can force most things to software with the option > > Option "MigrationHeuristic" "greedy" > > in your xorg.conf or xorg.conf.d/ (with xserver-1.8+ if migrated to that > use already). > > That should give a bit better results until you are able to have more > optimized driver. > > > There are patches on the mailing list for making text go 5-10 times > faster though. After those patches are finalized, we'll of course have > work ahead on optimizing various other rendering of the desktop besides > text drawing. > > > Regards, > Mart Raudsepp > >
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