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  • #1814
Closed
Open
Issue created Sep 25, 2019 by Bugzilla Migration User@bugzilla-migration

[GEN9+] 3-7% perf drop in SynMark2 v7 CSDof

Submitted by Eero Tamminen

Assigned to Intel 3D Bugs Mailing List

Link to original bug (#110745)

Description

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 e8139286: iris/resource: Drop redundant checks for aux support
  • 2019-05-15 04:34:49 a9cef4f0: 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)

Version: git

See also

  • https://bugs.freedesktop.org/show_bug.cgi?id=109517
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