** Changed in: xserver-xorg-video-intel
Status: Won't Fix => Fix Released
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https://bugs.launchpad.net/bugs/1087582
Title:
[gen3] Bad GPU performance
I got fed up with my 945gm not being capabile of 60fps glxgears.
commit d938da6b132a2d6addeba4c57a67ec3c07824843
Author: Ville Syrjälä
Date: Fri Mar 22 20:08:03 2019 +0200
drm/i915: Disable C3 when enabling vblank interrupts on i945gm
The main difference compared to the older pm_qos
Yeah I guess that's it, time to give up on this one. Wiggling the mouse
or running with wayland should fix this.
Thanks for reporting this bug and testing ideas, sorry that we couldn't
make this work :(
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which is
** Changed in: xserver-xorg-video-intel
Status: Incomplete = Won't Fix
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Title:
[gen3] Bad GPU performance whilst
So, i can test it.
Are there any place where i can pull all patches together? On top of which
branch should i test?
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(In reply to comment #65)
So, i can test it.
Are there any place where i can pull all patches together? On top of which
branch should i test?
I pushed the patches here:
git://gitorious.org/vsyrjala/linux.git agpbusy
I also reorganized them so it's easy to revert the top commit, which is
You was right, there was no access to dri.
Now i tested it with sudo glxgears.
So results are absolutely unusable. with moving mouse fps will drop to 5fps.
With moving mouse - 60fps. Results are same, before and after this patch set.
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(In reply to comment #71)
You was right, there was no access to dri.
Now i tested it with sudo glxgears.
So results are absolutely unusable. with moving mouse fps will drop to 5fps.
With moving mouse - 60fps. Results are same, before and after this patch set.
Hmm. Was it running fullscreen or
If it will some how help, i can give ssh access to this machine.
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Title:
[gen3] Bad GPU performance whilst CPU is in
(In reply to comment #74)
(In reply to comment #71)
You was right, there was no access to dri.
Now i tested it with sudo glxgears.
So results are absolutely unusable. with moving mouse fps will drop to 5fps.
With moving mouse - 60fps. Results are same, before and after this patch
set.
Typo in previous comment:
without mouse - 5fps
with mouse - 60fps
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Title:
[gen3] Bad GPU performance whilst CPU is in
(In reply to comment #75)
We don't need to force fullscreen to cause us to loose vblank interrupts
whilst the processor is asleep (and so render very slowly).
Oh right. Not sure where I got the idea that we wouldn't use vblank irqs
unless fullscreen.
After thinking about this for a while I
(In reply to comment #69)
On plain Xorg i get 125fps. Without any glitches.
With and without patches i get same results.
Ah, that's broken - we are not using vsync. Presumably it failed to get
permission to open /dev/dri/card0 and so is using indirect rendering
(which does not respect vsync).
kernel 3.13.0-00966-gec441a0, same result. 5-10fps on idle system, and
60fps with moving mouse.
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Title:
[gen3] Bad GPU
Hmm... i do not see noticeable changes.
I tested this patches on ubuntu 13.10 with unity/compize deskotop.
Glxgears show same performance before and after patches - about 58fps.
C4ATM usage seems to be identical too.
Do you have some suggestions what should i test?
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It would be easier to reproduce on a bare X.
If you do from a vt:
sudo service ligthdm stop
sudo Xorg -ac -noreset sleep 3; DISPLAY=:0 xterm
then launch glxgears from the xterm, does it show the behaviour we need to fix?
i.e. runs at below refresh rate unless there is another source of
No, i can't reproduce initial bug.
After powertop optimisation i get about 20 wk/s. Just to make sure the suystem
is idle.
On plain Xorg i get 125fps. Without any glitches.
With and without patches i get same results.
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As a reminder to myself, my only surviving non-pnv machine (915gm) has a
processor that does not support C-states (only speedstep). I tried the
patches and only keeping the CPU at maximum is sufficient to hit
glxgears vrefresh.
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** Changed in: xserver-xorg-video-intel
Status: Won't Fix = Incomplete
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Title:
[gen3] Bad GPU performance whilst
I guess it's time to give up - the only approach with restricting the
deep sleep states resulted in horrid power consumption figures ... Just
wiggle your mouse a bit :(
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I don't know if anybody is still watching this bug, but these patches
need testing:
http://lists.freedesktop.org/archives/intel-gfx/2014-February/039493.html
http://lists.freedesktop.org/archives/intel-gfx/2014-February/039494.html
I'll be able to test them in 2-3 weeks.
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Title:
[gen3] Bad GPU performance whilst CPU is in deep sleep
To manage
** Changed in: xserver-xorg-video-intel
Status: Confirmed = Won't Fix
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Title:
[gen3] Bad GPU performance whilst
Benjamin Laisure, this bug was reported a while ago and there hasn't
been any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
** Summary changed:
- Ubuntu vs. Lubuntu odd GPU Performance
+ [gen3] Bad GPU performance whilst CPU is in deep sleep
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** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New = Confirmed
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Title:
Ubuntu vs. Lubuntu odd GPU
Launchpad has imported 61 comments from the remote bug at
https://bugs.freedesktop.org/show_bug.cgi?id=30364.
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** Bug watch added: freedesktop.org Bugzilla #30364
https://bugs.freedesktop.org/show_bug.cgi?id=30364
** Also affects: xserver-xorg-video-intel via
https://bugs.freedesktop.org/show_bug.cgi?id=30364
Importance: Unknown
Status: Unknown
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** Tags added: performance
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Title:
Ubuntu vs. Lubuntu odd GPU Performance
To manage notifications about this bug go
Public bug reported:
I have an Acer AOD250(KAV60) netbook.
On Ubuntu 12.10 with glxgears I get 50-60 fps, while on Lubuntu I get half that
and sometimes worse.
The odd thing about this is that when I start moving my mouse around it
straightens up and goes back to roughly 55-60 fps, and once I
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