Bug 110745

Summary:	[GEN9+] 3-7% perf drop in SynMark2 v7 CSDof
Product:	Mesa	Reporter:	Eero Tamminen <eero.t.tamminen>
Component:	Drivers/DRI/i965	Assignee:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Status:	RESOLVED MOVED	QA Contact:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity:	normal
Priority:	medium
Version:	git
Hardware:	Other
OS:	All
See Also:	https://bugs.freedesktop.org/show_bug.cgi?id=109517
Whiteboard:
i915 platform:		i915 features:

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)

Comment 1 GitLab Migration User 2019-09-25 20:33:29 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1814.

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