Phoronix: The Impact Of Radeon DRM On Linux 3.3, DRM-Next
Recently I showed off some Intel DRM benchmarks from the Linux 3.3 kernel along with what will be in the Linux 3.4 kernel via drm-next. These results indicated some performance improvements on the side of Intel Sandy Bridge hardware, but how do the new kernel and Linux 3.4 impact the discrete Radeon graphics? Here's some benchmarks covering that side of the graphics table.
My HD7970 is currently getting 0 fps with the open source graphics stack, so I'd be happy to see performance numbers like Cayman's World of Padman -- that would be infinity times better than what I have now.
Also, it's very interesting that you think that "The results for Nexuiz are more interesting than Nexuiz". I would tend to agree; Nexuiz is not a very interesting game, but the performance results that you produced, using it, are very interesting indeed. I think you might have typoed this and meant to say something like "The results for Nexuiz are more interesting than Doom 3", but that would be eliding the very deep philosophical point you validly made about the level of intrigue associated with playing the game Nexuiz versus benchmarking it.
I use Fedora 17 and a Radeon 3200 IGP. On the current kernel version 3.3.0-0.rc7.git2.3.fc17.x86_64 I don't have any issues with a performance regression. On a rc6 kernel I had much worse fps than ussually in a game, but I didn't test it much, because I avoided this rc6 kernel then. I had 1-2 fps when I used this kernel, and ussually I get around 15 fps with the free Radeon driver (game: regnum online).
It helps also to use a kernel without debugging options enabled. With this option enabled my system freezes sometimes. I have no idea if Beta TC2 already used the kernel version above or a older version with debugging enabled.