On Fri, May 04, 2012 at 01:40:27PM -0700, Jesse Barnes wrote: > On Fri, 4 May 2012 18:58:59 -0700 > Ben Widawsky <ben at bwidawsk.net> wrote: > > > I'm seeing about a 5% FPS improvement across various benchmarks on my > > IVB i3. Rumor has it that the higher end parts show even more benefit. > > > > This derives from a patch originally given to me by Bernard. The docs > > are confusing about the definition names (ie. medium really seems > > like max), but it would seem it gives more cache to the GT at the > > expense of uncore. This configuration makes the split most in favor > > of the GT. I've not tried the other IDICOS values. > > Bringing the IRC discussion here. I think this is really at the > expense (though not really) of the CPU, since it allows the GPU to use > more of the shared CPU/GPU cache in the uncore. > > You can fix up the #define names if you want; the MEDIUM etc may be > from an old, incorrect doc. They were added awhile back. Another perk from me: Can you do some benchmarking of this for snb, too? -Daniel -- Daniel Vetter Mail: daniel at ffwll.ch Mobile: +41 (0)79 365 57 48
