On Fri, Apr 15, 2016 at 12:31 PM, Alkis Georgopoulos < 1566...@bugs.launchpad.net> wrote:
> I tried applying the latest 13 commits from the test-3-18 branch on top > of Xenial's metacity. > Are you sure that all patches applied? If my benchmarks were correct, it made things even slower. > > glmark2 score: > xenial-metacity --no-composite: 311 > test-3-18-metacity --no-composite: 154 > xenial-marco --no-composite: 902 > glmark2 segfaults for me, but glxgears gives me following results: no-composite: ~750 FPS vs. ~2380 FPS composite: ~540 FPS vs. ~710 FPS I.e. now it's 6 times, rather than 3 times, slower than marco... > If that is true then I have no idea how this could happen... At least one of problem was that all frame/decoration windows was created with 32bit visual for transparency (even when running without compositing manager). If we look from no-composite side than it is almost only about revert of that change... Can we use marco instead? Doesn't it additionally have CSD support? > In Flashback session? No - Flashback will never use marco. Or, could end users of gnome-flashback-session decide to install and use > marco instead of metacity without bumping into major issues? It should be possible to install, but I have no idea if there will be problems... -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to metacity in Ubuntu. https://bugs.launchpad.net/bugs/1566157 Title: Metacity's compositing is too slow Status in metacity package in Ubuntu: New Bug description: I did the following benchmarks between `metacity --no-composite`, `metacity --composite`, and `compiz`, in Ubuntu 16.04. First, I disabled vsync: $ cat ~/.drirc <device screen="0" driver="dri2"> <application name="Default"> <option name="vblank_mode" value="0"/> </application> </device> Then I ran glxgears as follows: $ metacity --no-composite --replace & sleep 5 && glxgears & sleep 20 && killall glxgears 29564 frames in 5.0 seconds = 5912.721 FPS 29729 frames in 5.0 seconds = 5945.777 FPS $ metacity --composite --replace & sleep 5 && glxgears & sleep 20 && killall glxgears 10366 frames in 5.0 seconds = 2073.057 FPS 10194 frames in 5.0 seconds = 2038.702 FPS $ compiz --replace & sleep 5 && glxgears & sleep 20 && killall glxgears 37633 frames in 5.0 seconds = 7522.813 FPS 37990 frames in 5.0 seconds = 7597.965 FPS As a second set of benchmarks, I ran glxgears -fullscreen as follows: $ metacity --no-composite --replace & sleep 5 && glxgears -fullscreen & sleep 20 && killall glxgears 1652 frames in 5.0 seconds = 330.296 FPS 1667 frames in 5.0 seconds = 333.281 FPS $ metacity --composite --replace & sleep 5 && glxgears -fullscreen & sleep 20 && killall glxgears 886 frames in 5.0 seconds = 177.007 FPS 891 frames in 5.0 seconds = 178.099 FPS $ compiz --replace & sleep 5 && glxgears -fullscreen & sleep 20 && killall glxgears 1830 frames in 5.0 seconds = 365.868 FPS 1847 frames in 5.0 seconds = 369.242 FPS Normalized results (with compiz=100): ================================ Windowed: metacity --no-composite: 78 FPS metacity --composite: 27 FPS compiz: 100 FPS Full screen: metacity --no-composite: 90 FPS metacity --composite: 48 FPS compiz: 100 FPS So `metacity --composite` in this test was about 2 times slower than `metacity --no-composite` and about 3 times slower than `compiz`. This test was done an "Intel(R) Core(TM) i5-4440 CPU @ 3.10GHz" CPU, with the following embedded graphics card: $ lspci -nn -k | grep -A 2 VGA 00:02.0 VGA compatible controller [0300]: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [8086:0412] (rev 06) Subsystem: Gigabyte Technology Co., Ltd Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [1458:d000] Kernel driver in use: i915 I'll upload more tests if I find anything newsworthy. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/metacity/+bug/1566157/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
