Linux 4.1 Kernel Benchmarks With An Intel Core i7 IVB System

Yesterday I ran some fresh tests of Intel Ivy Bridge on the latest Mesa Git code to see if the performance has changed much recently for the slightly-older generation of Intel HD Graphics. Today I've done some similar tests in kernel-space with the Linux 4.1 kernel.

I ran benchmarks from the same Core i7 3770K system while testing the vanilla Linux 3.19, 4.0, and 4.1 Git kernels and running various graphics tests to see if there's been any recent i915 DRM kernel changes affecting the Ivy Bridge graphics performance.
Long story short, no measurable change in performance for these past three kernel series.
Only with Warsow was there a measurable change in performance that currently is unexplained.

The rest of the results can be found via this OpenBenchmarking.org result file.