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Tweaking KDE's KWin For Linux Gaming Performance

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  • phoronix
    started a topic Tweaking KDE's KWin For Linux Gaming Performance

    Tweaking KDE's KWin For Linux Gaming Performance

    Phoronix: Tweaking KDE's KWin For Linux Gaming Performance

    After looking recently at the impact on performance and power consumption of various Linux desktop environments running under Ubuntu 12.04 (Unity, Unity 2D, GNOME Shell, KDE, Xfce, LXDE, and Openbox), there were requests by many Phoronix readers to look at the impact of KDE on 3D gaming. KDE's KWin compositing window manager offers several options that can be easily changed that have a direct result on the Linux system's performance for full-screen OpenGL games.

    http://www.phoronix.com/vr.php?view=17269

  • molecule-eye
    replied
    Originally posted by bug77 View Post
    If testing OpenGL, why not test using a driver that properly supports it (e.g. nvidia blob)?
    In exactly what sense do the Catalyst drivers not properly support OpenGL on linux? Just curious.

    Leave a comment:


  • molecule-eye
    replied
    Interesting

    Articles like this are great. I wonder, however, if there are any differences between the compositing modes, i.e. between crisp, accurate, etc. I'm guessing that, if there are, they're pretty marginal.

    The good news is that those of us using the proprietary Catalyst drivers don't have to worry about disabling compositing to get better performance.

    Leave a comment:


  • mrbumpy409
    replied
    Originally posted by darkbasic View Post
    The real question is: why is it capped @60fps?
    Vsync? Perhaps the Vsync option is only kicking in when the Kwin desktop effects are suspended. I wonder if enabling Vsync in the KDE desktop effects settings would create a similar cap on the game's framerate with the desktop effects enabled.

    Leave a comment:


  • kraftman
    replied
    Thank you very much for this interesting benchmarks and for listening to your readers Michael.

    I did some benchmarks with Unigine Heaven and Catalyst and the results were identical in every possible scenario. When using Open Source Radeon drivers suspending compositions was helpful. Maybe there's something wrong with Intel?

    Leave a comment:


  • darkbasic
    replied
    The real question is: why is it capped @60fps?

    Leave a comment:


  • markos
    replied
    Originally posted by Qaridarium View Post
    after reading this article i chance my setting from openGL to xrender
    No need... The whole comparison is moot. Look again at the results, Gallium3D "Suspend effects" is capped around 60 fps. That's why xrender seems faster.

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  • Qaridarium
    replied
    after reading this article i chance my setting from openGL to xrender

    Leave a comment:


  • russofris
    replied
    I would also be curious (in your next WM comparison) to see a couple benchmark graphs with a "no windows manager" column. It's not that I believe that there are gamers that use Ctrl-Alt-F# as a WM, it's just that I would like an rational baseline for comparison, and gain the ability to assign a cost to each WM.

    I guess that the kiosk, showcase, and arcade guys would be interested as well.
    Last edited by russofris; 04-20-2012, 12:16 AM.

    Leave a comment:


  • bug77
    replied
    If testing OpenGL, why not test using a driver that properly supports it (e.g. nvidia blob)?
    Any way, it looks that even with compositing disabled, KDE is still the slowest of the bunch when it comes to gaming.

    As a side node, using Kubuntu 12.04 beta here and the option to suspend compositing in full screen was enabled by default.

    Leave a comment:

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