Our latest focus in benchmarking the Linux 3.15 kernel is the Radeon DRM kernel graphics driver. There's been some reports of small performance changes with this newest kernel currently under development, in part due to some video memory optimizations that landed this cycle. In this article are benchmarks of four AMD Radeon graphics cards when running Linux 3.14 and 3.15 Git.
The graphics cards benchmarked on Linux 3.14.0 stable versus Linux 3.15 Git from this week include the AMD Radeon HD 6770, HD 6950, HD 7850, and R9 270X. Ubuntu 14.04 LTS x86_64 was in use on the system with Unity 7.2, Mesa 10.1.0, and xf86-video-ati 7.3.0.
All of this easy benchmarking was handled via the Phoronix Test Suite benchmarking software.