Bug 92562 - [IVB/BYT/BDW/BSW Regression]Synmark2_v6 OglBatch7 performance reduced by 6%-10%
Summary: [IVB/BYT/BDW/BSW Regression]Synmark2_v6 OglBatch7 performance reduced by 6%-10%
Status: CLOSED WORKSFORME
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Ian Romanick
QA Contact: Intel 3D Bugs Mailing List
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-10-21 07:40 UTC by wendy.wang
Modified: 2015-10-28 05:51 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
xorg.log (18.27 KB, text/plain)
2015-10-21 07:40 UTC, wendy.wang 		Details
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Description wendy.wang 2015-10-21 07:40:01 UTC 
Created attachment 119025 [details]
xorg.log

Test environment:
IVB/BYT/BDW/BSW platforms will have this regression issue.
Mesa regression: Yes.Bisect is in under going.

Description:
Synmark2_v6 OglBatch7 performance reduced by 6%-10% for below platforms.
IVB-M: dropped by -6%
BYT-M: dropped by -7%
BDW-U: dropped by -9%
BSW-M: dropped by -17%

Xorg.log attached.

Mesa Good commit:
git-82b324c

Mesa Bad commit:
git-ff31c24

Reproduce steps:
1.   xinit&
2.  ./synmark2 OglBatch7
Comment 1 wendy.wang 2015-10-28 05:51:13 UTC 
Synmark2_v6 OglBatch7 case frustrated a lot, it's hard to bisect the correct commit right now. 
Retest with 4.3.0-rc7-drm-intel-nightly-044d63-20151027+ kernel and 20151022 X11R7 GFX drivers, seems the OglBatch7 case perf improved again.
I will close this bug as cannot reproduce first, will reopen when the bug happened again.

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