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  • #1799
Closed
Open
Issue created Sep 25, 2019 by Bugzilla Migration User@bugzilla-migration

[GEN8+] 1-2% perf drop in SynMark2 OglPSPom

Submitted by Eero Tamminen

Assigned to Intel 3D Bugs Mailing List

Link to original bug (#110029)

Description

Setup:

  • Ubuntu 18.04 with Unity/compiz
  • v4.19+ drm-tip kernel & git version of Xserver
  • Mesa git version
  • BSW/BDW/BXT/SKL/KBL/CFL HW
  • FullHD monitor

Test-case:

  • SynMark2 v7 OglPSPom test in FullHD fullscreen

Performance of that has dropped by 1-2% on all GEN8+ platforms between following Mesa commits:

  • 2019-02-01 17:34:02 ab940b0d: spirv: Support LocalSizeId and LocalSizeHintId execution modes
  • 2019-02-02 14:42:14 0aa5a97b: relnotes: Add VK_EXT_buffer_device_address

There was no perf drop on SNB/HSW, or in other benchmarks I'm running.

Wontfixing this is fine, but I think somebody should bisect it first.

Version: git

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