KWin Can Cause A Performance Hit Too, But It's Different From Compiz
With World of Padman, we have the same story again:
- There's no measurable performance hit when running KWin with
Intel graphics compared to the frame-rate drop experienced when running Compiz.
The Tremulous results are interesting on many different fronts with the open-source Radeon driver continuing to do better with this ioquake3 game when a compositing manager is enabled the frame-rate actually increases, the frame-rate also increases with a compositing manager when running the ATI Catalyst driver, and with the NVIDIA driver there is no measurable performance change with KWin/Compiz compared to Metacity.
Urban Terror is the same story with KWin on Intel doing better than Compiz on Intel, the open-source Radeon driver taking a hit regardless of the compositing window manager, the Catalyst driver performs the same, and the NVIDIA driver takes a slight hit when dealing with compositing.
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