Bug 21164

Summary:

Very bad Clutter performance with DRI2 & UXA

Product:

DRI

Reporter:

Neil J. Patel <njpatel>

Component:

General

Assignee:

Default DRI bug account <dri-devel>

Status:

RESOLVED INVALID

QA Contact:

Severity:

normal

Priority:

medium

CC:

jobi, krh

Version:

XOrg git

Hardware:

Other

OS:

All

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
xorg.conf of machine	none
glxinfo output of machine	none

Description Neil J. Patel 2009-04-14 02:52:56 UTC

With UXA enabled on Jaunty which is running GNOME with Metacity (no compositing) mostly all GL application work perfectly well, apart from Clutter[1] based applications. The performance is degraded and animations are very jerky. Switching off motion events and tuning down animations seems to make only a small difference.

Without UXA, Clutter applications work perfectly. There appears to be a gl call that Clutter uses which is giving bad performance with UXA. However, I'm not a 'gl person', so I can't debug. 

While I understand that UXA is still work-in-progress, I thought it would be good to raise the issue, as it seems most of GNOME is going with Clutter as an accelerated canvas.

I filed the bug[2] upstream in Clutter, but they've marked it as NOTABUG, as it continues to work fine without UXA.

[1] www.clutter-project.org
[2] http://bugzilla.openedhand.com/show_bug.cgi?id=1544

Please find the output of glxinfo and the xorg.conf attached.

Comment 1 Neil J. Patel 2009-04-14 02:53:31 UTC

Created attachment 24783 [details]
xorg.conf of machine

Comment 2 Neil J. Patel 2009-04-14 02:54:12 UTC

Created attachment 24784 [details]
glxinfo output of machine

Comment 3 Kristian Høgsberg 2009-04-14 08:00:39 UTC

Clutter has some creative vblank syncing code that may clash with recent changes.  Try exporting CLUTTER_VBLANK=none and running the application in that environment.

Comment 4 Neil J. Patel 2009-04-22 02:46:12 UTC

Thanks for the tip Kristian, however it doesn't work for both Clutter 0.8 and Clutter 0.9. The bad performance continues with or without vblanking disabled. Is there anything else I could test to see where the performance is failing?

Comment 5 Neil J. Patel 2009-04-22 04:02:28 UTC

Doing some more tests, the test-cases for Clutter seem to work fine, so I think it may be worth making this bug a invalid unless/until I can prove it's a Clutter-bug and not something netbook-launcher is doing wrong. Sorry for not testing out the test-cases sooner.

Comment 6 Adam Jackson 2019-05-29 17:01:44 UTC

Closing per comment #5, and I don't imagine uxa performance is high on anyone's radar anymore.

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