With a CompuLab Intense-PC sporting an Intel Core i7 3517UE "Ivy Bridge" processor with Intel HD 4000 graphics and running Ubuntu 13.04 x86_64, the Linux 3.5, 3.6, 3.7, 3.8, and 3.9 Git mainline kernels were compared for a variety of Linux-native OpenGL workloads. This was while the rest of the Ubuntu 13.04 installation was using its stock settings and packages.
Like the other recent quick one-page benchmarking articles, the results in full for this Linux 3.9 Intel coverage can be found on OpenBenchmarking.org in 1304113-UT-INTELIVYB98.
For some Linux games, the open-source Intel Linux graphics driver is slower on the to-be-released Linux 3.9 kernel.
For other games, it's about recovering from performance regressions introduced on earlier kernel releases.
Other games are dead-flat with their performance when upgrading the Linux kernel.
See the rest of the story here.