Bug 110745 - [GEN9+] 3-7% perf drop in SynMark2 v7 CSDof
Summary: [GEN9+] 3-7% perf drop in SynMark2 v7 CSDof
Status: NEW
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: Intel 3D Bugs Mailing List
QA Contact: Intel 3D Bugs Mailing List
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Reported: 2019-05-23 16:17 UTC by Eero Tamminen
Modified: 2019-05-23 16:17 UTC (History)
0 users

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Description Eero Tamminen 2019-05-23 16:17:44 UTC
Mesa performance in SynMark2 v7 CSDof test dropped 3-7% on all our GEN9 devices.  

Setup:
- Ubuntu 18.04
- Unity / compiz desktop
- Mesa from git
- X server and drm-tip kernel from git within last 1-2 months, with modifier support enabled
- FullHD monitor

Test-case:
- synmark2 OglCSDof
  (configured to run in fullscreen FullHD resolution.)

Regression happened between following commits:
* 2019-05-14 16:23:12 e81392868e: iris/resource: Drop redundant checks for aux support
* 2019-05-15 04:34:49 a9cef4f0e5: gallium: Add default check for PIPE_CAP_FRAGMENT_SHADER_INTERLOCK

Notes:
* There are a lot of compiler changes between these dates
* Only CSDof test performance changed, and only on GEN9 devices (not on GEN7-8 ones)


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