[Bug 111090] 3% perf drop in GfxBench Manhattan 3.0, 3.1 and CarChase test-cases

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111090

--- Comment #16 from Eero Tamminen <eero.t.tamminen at intel.com> ---
(In reply to Eero Tamminen from comment #14)
> There were following perf changes on SKL GT2 & KBL GT3e:
> * SynMark VSTangent improved by 10%
> * GLB 2.7 Egypt improved by 1-2%
> * GLB 2.7 T-Rex improved by < 1%
> * SynMark ZBuffer decreased by 5% KBL GT3e and 3% on SKL GT2 (*)

On BXT, ZBuffer perf had actually also increased (from what it was month ago,
as I don't have closer "before" data), and on BDW GT2 there was no change in it
(although other listed cases did improve also on BDW GT2).

I.e. I think ZBuffer drop on SKL / KBL can be ignored.  It's been only
significant kernel perf change since this bug, besides the one around 22nd of
June, with 5% improvement in SynMark Batch0, 1-4% in VS* and 4% perf drop in
SynMark GSCloth & ShMapPcf on SKL GT2 (and marginal changes on other core
devices).

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