Bug 73514 - Slow performance with bochs
Summary: Slow performance with bochs
Status: RESOLVED MOVED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: git
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: xf86-video-ati maintainers
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-01-12 02:04 UTC by Richard Eames
Modified: 2019-11-19 07:44 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
dmesg slow (88.03 KB, text/plain)
2014-01-14 02:38 UTC, Richard Eames 		no flags Details
Xorg log slow (101.39 KB, text/plain)
2014-01-14 02:38 UTC, Richard Eames 		no flags Details
View All

Description Richard Eames 2014-01-12 02:04:17 UTC 
I've been experiencing a performance regression when I'm using bochs, and using the latest git X and radeon. Browsing through boch's gui source, it looks like it's using a lot of bitmaps. I'm getting probably 1-2fps. What can I do to help narrow down what's causing this?

xserver-xorg-video-radeon:  Installed: 1:7.2.0+git1401090730.3213df~gd~s
linux-image-3.13.0-999-generic:  Installed: 3.13.0-999.201401020405
Comment 1 Alex Deucher 2014-01-12 23:29:56 UTC 
What versions of the components were you using when the performance was better?  What hardware are you using?  Please attach your xorg log and dmesg output from both the well performing setup and the poorly performing setup.
Comment 2 Richard Eames 2014-01-14 02:38:23 UTC 
Created attachment 92012 [details]
dmesg slow
Comment 3 Richard Eames 2014-01-14 02:38:43 UTC 
Created attachment 92013 [details]
Xorg log slow
Comment 4 Richard Eames 2014-01-14 22:03:09 UTC 
I've tried different builds of the kernel, mesa, and the radeon driver from over the past three weeks, and always get the performance issues. I think when I remember there not being an issue must have been when I was using fglrx. 

So, there's not really a "regression" per se, but there is a performance issue somewhere.

I forgot to mention in my first post, I'm using a duel card setup: Radeon R7 260x and a Radeon HD 4850.
Comment 5 Alex Deucher 2014-01-14 22:20:15 UTC 
You might try the glamor patches in bug 64738, bug 68524, bug 71813.
Comment 6 Richard Eames 2014-03-16 00:00:32 UTC 
Well, bug 64738 and bug 71813 didn't help, and in fact gtkperf shows they made things worse.

As for bug 68524, the current patch is still too slow to tell if it helps at all.
Comment 7 Michel Dänzer 2014-03-17 06:34:02 UTC 
If the slowness is really related to bitmaps as you suggest, current glamor Git or the pending patches for glamor in the xserver tree might help.
Comment 8 Michel Dänzer 2015-04-23 01:51:25 UTC 
With current xf86-video-ati Git master, does Option "ShadowPrimary" help? (I recommend enabling Option "TearFree" as well)
Comment 9 Martin Peres 2019-11-19 07:44:18 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/xorg/driver/xf86-video-ati/issues/90.

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