[Bug 103110] [GEN7]=?UTF-8?Q?=C2=A010=2D20=25=20drop=20in=20SynMark=20terrain=20tests=20perf?=, 4% drop in Manhattan 3.0 perf

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103110

--- Comment #2 from Eero Tamminen <eero.t.tamminen at intel.com> ---
I can reproduce earlier good results, so the drop wasn't due to setup change on
our HSW.

During past ~3 months, there haven't been significant changes in terrain tests
results before this on HSW GT2 (I don't have data for GT3e).  So, kernel and X
versions shouldn't matter that much (only change was modesetting dropping perf
on BYT).  Our Mesa test setup is currently using kernel 4.13 and X server from
same time frame (mid September), with rest being Ubuntu 16.04.

Maybe the issue requires GPU to be slower than yours compared to the CPU, to be
visible?  Our HSW is i7-4790, 1200Mhz GT2.  If you don't have anything similar
at your side, one option would be to try disabling one slice / eMMC or just
lowering GPU max speed enough to make the tests fully GPU bound.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-3d-bugs/attachments/20171006/3b34e4ec/attachment.html>