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. Jesse
