Here is the result of test I did some time back
Link
Results of fgl_glxgears (5 sec)
Gnome Classic (without effect): 4540.2
Ubuntu Unity: 3935
Gnome Classic (with effect): 3881.6
KDE Plasma Workspace: 3776.8
Gnome: 3693.2
Cinnamon 3D: 3679.4
Ubuntu (Unity 2D): 1307
Cinnamon 2D: 1104
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Ubuntu 13.04 Desktop Gaming Performance Comparison
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What I notice about these tests is that excluding a few worst cases, even composition isn't as bad as it used to be to game. The DE and driver makes have really cleaned up thier work to prevent slow down alot and it shows.
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Benchmarks don't show anything hugely surprising; the lightest desktops/non-composited WM's will yield best performance.
I too am curious how KDE is used though and whether there is a regression. Either way shouldn't affect me too much, I just disable desktop effects before i play a game anyway since KDE makes it so easy to do (toggle with alt-shift-F12)
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Originally posted by talvik View PostI disagree, sticking to the default is the most realistic test. What is 'unredirect fullscreen'?
Every benchmark someone says it's useless because: "Distro Y sucks, distro X wasn't tested", "gcc didn't A,B,C parameters", "kernel ....", "Testing version 3.5.71 is stupid", "Gosh, proper gaming is done with low latency real time kernel."....
Last time I saw a blog post by kwin dev about Phoronix benchmark. He thought the benchmark was useless, because it didn't use kwin with three different drawing back-ends and n other settings. If everyone had their way, each chart would have thousands of items.
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Originally posted by talvik View PostI disagree, sticking to the default is the most realistic test. What is 'unredirect fullscreen'?
Every benchmark someone says it's useless because: "Distro Y sucks, distro X wasn't tested", "gcc didn't A,B,C parameters", "kernel ....", "Testing version 3.5.71 is stupid", "Gosh, proper gaming is done with low latency real time kernel."....
Last time I saw a blog post by kwin dev about Phoronix benchmark. He thought the benchmark was useless, because it didn't use kwin with three different drawing back-ends and n other settings. If everyone had their way, each chart would have thousands of items.
These benchmarks are an absolute joke. What's the point of these? Have you got any conclusion at all? Do you even know the conditions these were done on?
I don't understand "sticking to the default is the most realistic test" either. What's the most realistic for you? Should all distros using openbox by default (as it appears to be the best for gaming)? AFAIK, in KDE you just have to press 'Shift+Alt+F12' to disable compositing or check the option 'Disable compositing in fullscreen' and do the tests on fullscreen.
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Originally posted by Ericg View PostMichael, clarify here in the forums: was KDE set to unredirect fullscreen windows or not? If so, great, then obviousl theres a regression. But If not then this entire article can be tossed out because the basic premise is "Window manager doesnt matter."
Like I really dont bash your articles much but you not setting that option from time to time is mine--and others-- biggest peeve with you because theres a certain line between "Keeping the defaults" and "common sense for benchmarking."
Every benchmark someone says it's useless because: "Distro Y sucks, distro X wasn't tested", "gcc didn't A,B,C parameters", "kernel ....", "Testing version 3.5.71 is stupid", "Gosh, proper gaming is done with low latency real time kernel."....
Last time I saw a blog post by kwin dev about Phoronix benchmark. He thought the benchmark was useless, because it didn't use kwin with three different drawing back-ends and n other settings. If everyone had their way, each chart would have thousands of items.
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Gala?
I'd really like to see the performance of Gala, the coming-up mutter-inspired window manager of Elementary OS. It gives a good user experience but I'm really curious of the true capabilities.
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Originally posted by mark_ View Postso: the less complex the WM the more FPS. What about xdm? If Xfce gives me 10fps more than KDE and xdm gives me 10fps more than Xfce this could be totally worth it for a gaming machine. Please include xdm next time.
Originally posted by oleidOne thing that I find interresting ist, that gnome-shell is sometimes the slowest and sometimes (one of) the fastest desktop(s) according to these benchmarks. How can that be? Shouldn't there be a uniform slowdown due to composite?
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Enlightenment e17 was benchmarked with stock settings, which does mean it does not redirect fullscreen windows. It automatically does this, if the option is turned on. For full compatibility it is not default to on.
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Originally posted by mark_ View Postso: the less complex the WM the more FPS. What about xdm? If Xfce gives me 10fps more than KDE and xdm gives me 10fps more than Xfce this could be totally worth it for a gaming machine. Please include xdm next time.
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