Intel Sandy Bridge On The Linux 3.2 Kernel
For those wondering whether or not the Linux 3.2 kernel will once again up the graphics performance for Intel Sandy Bridge hardware, here are some results.
Over on OpenBenchmarking.org I uploaded some results last week from an Intel Sandy Bridge system using the latest Mesa 7.12-devel Git and xf86-video-intel DDX while comparing the Intel SNB performance between Linux 3.1 and Linux 3.2.
As you can see from those Intel Sandy Bridge results on OpenBenchmarking.org, there really isn't any performance difference on the current 3.2 kernel Git compared to 3.1 final. This comes after a nice performance boost in Linux 3.1 and other performance optimizations that have come to the latest generation of Intel graphics in recent months with the Intel kernel DRM, Mesa (now with GLSL 1.30 support! and HiZ and other performance boosts), and xf86-video-intel (namely SNA acceleration).
No Intel SNB performance boost under Linux 3.2 isn't much of a surprise based upon the DRM pull for Linux 3.2, which was relatively boring on the Intel side aside from fixes for the Apple MacBook Air and Red Hat Enterprise Linux.
It's still expected Intel will enable RC6 power-savings support this cycle, which will conserve greater power when idling but at the same time some interesting results I discovered a few weeks back was that RC6 can also boost the graphics performance too.
Below is an email exchange I had last week with Eugeni Dodonov, one of Intel's newest OSTC employees, concerning the 3.2 kernel and Intel RC6 support under Linux.
yes, I actually wrote about it in some days since we talked [blog], and also discussed with Jesse.
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