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Ubuntu's Unity Is Also Painful For 2D Performance

Ubuntu

Published on 05 September 2012 12:24 PM EDT
Written by Michael Larabel in Ubuntu
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Besides the Unity desktop and Compiz window manager in Ubuntu impairing the Linux OpenGL performance, the 2D performance is also dramatically affected by this desktop configuration.

Published yesterday on Phoronix were the Ubuntu's Unity/Compiz Gets Even Slower and Intel SNA Ivy Bridge - September 2012 articles.

The Unity/Compiz performance is getting slower with the newer packages while separately the other article looked at the Intel SNA acceleration architecture, which happened to be running from an Ubuntu system with the Unity desktop.

Chris Wilson, the Intel OTC developer responsible for spearheading SNA's development, subsequently wrote in the forums: " These set of benchmarks still have some bogosity behind them. There should be no difference in the copy throughput since that is GPU bound using identical operations, but most of the rest can be explained with the choice of unity wm and using ubuntu. Comparing results from a mobile GT2 device (a i7-3720qm) with this article a deskop GT1 chipset we get the impression that the system under test underperformed significantly."

Chris Wilson ran some additional 2D benchmarks that matched the Phoronix tests to show what he gets when running UXA and SNA bare without Unity (he's using Debian) and when relying upon the GNOME Shell. Those interested in his results without Unity to show the 2D performance improvement, see his OpenBenchmarking.org result file. You can also join the fun yourself by running these benchmarks through running phoronix-test-suite benchmark 1209044-SU-1209034SU66 after having installed the Phoronix Test Suite software.

Wilson's data also jives with an earlier Phoronix article looking at the 2D performance under Unity/Compiz: Ubuntu's Unity Decision Affects 2D Performance Too. Fortunately, new cross-desktop OpenGL and 2D benchmarks are on the way.

Also, for those wondering about the performance regression caused by the latest Unity/Compiz, Sam Spilsbury working for Canonical on Compiz, wrote an explanation in the forums for the regression.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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