Nouveau - Sep 2013 - [Bug 69827] New: Uneven, jerky mouse movement, increasing CPU usage

https://bugs.freedesktop.org/show_bug.cgi?id=69827

          Priority: medium
            Bug ID: 69827
          Assignee: nouveau at lists.freedesktop.org
           Summary: Uneven, jerky mouse movement, increasing CPU usage
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: jimoe at sohnen-moe.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: 7.7 (2011)
         Component: Driver/nouveau
           Product: xorg

Created attachment 86603
  --> https://bugs.freedesktop.org/attachment.cgi?id=86603&action=edit
kernel log when CPU usage has increased significantly without apparent cause

openSUSE v12.3
  linux v3.7.10-1.1-desktop x86_64
  gnome 3.6.2
  nouveau video driver
  nVidia gt470 graphics adapter
  AMD Athlon II X4 630 Processor

I filed this bug in the Gnome Bugzilla system
<https://bugzilla.gnome.org/show_bug.cgi?id=699285>. After a long delay,
they
suggested filing it here. So here it is.

I have attached a kernel log from today.

Commentary from the Gnome report:

Ever since gnome version 3.2 the mouse movement becomes more uneven as the
logon time increases. Initially the movement is smooth and even as expected. As
the session time increases the movement shows regular pauses (every 1 - 2
seconds) for some fraction of a second, then "catches up" to where it
would
have been had it not paused. As the session time increases, so does the
jerkiness, i.e., the pauses increase in length.

This is annoying. It is exaggerated in a VirtualBox VM, guest type os/2, where
tje issue is quite pronounced. Given enough time, though, even native apps show
the jerkiness.

It is related somehow to the build up of CPU usage. Initially the idle time
usage is about 4% with a browser, email agent and a VM. As time goes by the
idle usage increases to about 15% where the mouse action is so uneven that it
is no longer tolerable.

The problem has worsened with later versions since 3.2; the jerkiness increases
after only several hours rather than days. It has gotten so bad that I have
gone to KDE where there is no such issue.

It occurs for two different mice, a wired unit and a wireless one. I
am currently using a Logitech MX300 mouse. Dis-/re-connecting the mice made no
difference.

The only solution so far is to log out and in again, or more recently, use KDE.

Other systems here do not have this problem. The primary difference is that
this system has a nVidia graphics adapter; all the other systems have ATI
adapters of some sort.


See the "top" results below. Note that gnome-shell starts at about 7%
CPU
usage, 11 hours later it has risen to 18%. I really prefer Gnome over KDE. It
is sad that this issue has made it unusable.

Here a section of "top" when Gnome first starts after login.

top - 11:55:44 up 11 days, 13:27,  3 users,  load average: 4.14, 4.24, 4.30
Tasks: 240 total,   1 running, 238 sleeping,   0 stopped,   1 zombie
%Cpu(s):  2.4 us,  2.6 sy,  0.0 ni, 95.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem:   8192128 total,  7930368 used,   261760 free,   158984 buffers
KiB Swap:  2104476 total,    80392 used,  2024084 free,  5654784 cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM     TIME+ COMMAND            
14487 jmoe      20   0 2916m 1.0g 982m S  8.0 12.8   5:47.24 VirtualBox         
14430 jmoe      20   0 1937m 178m  49m S  7.0  2.2   6:00.63 gnome-shell        
14125 root      20   0  342m  93m  25m S  2.3  1.2   3:20.56 Xorg               
15310 jmoe      20   0 1878m 248m  45m S  1.7  3.1   6:13.28 thunderbird-bin    
16267 jmoe      20   0  340m  17m  12m S  0.7  0.2   0:28.97 gkrellm            
14445 jmoe      20   0 1099m  30m  19m S  0.3  0.4   0:06.15 nautilus           
18756 root      20   0     0    0    0 S  0.3  0.0   0:01.58 kworker/2:2        
19684 root      20   0     0    0    0 S  0.3  0.0   0:01.08 kworker/1:2        
21537 jmoe      20   0 19392 1736 1124 R  0.3  0.0   0:00.25 top                
    1 root      20   0 48376 6428 1588 S  0.0  0.1   0:04.41 systemd            


Here a section of "top" after Gnome has run for 11 hours.

top - 23:02:54 up 12 days, 33 min,  6 users,  load average: 2.51, 2.56, 2.26
Tasks: 238 total,   1 running, 236 sleeping,   0 stopped,   1 zombie
%Cpu(s):  3.6 us,  9.1 sy,  0.0 ni, 87.0 id,  0.1 wa,  0.0 hi,  0.2 si,  0.0 st
KiB Mem:   8192128 total,  7861724 used,   330404 free,   222484 buffers
KiB Swap:  2104476 total,    84064 used,  2020412 free,  5327096 cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM     TIME+ COMMAND            
14430 jmoe      20   0 1973m 209m  45m S 18.2  2.6  80:11.73 gnome-shell        
22624 jmoe      20   0 2926m 1.0g 1.0g S  8.9 13.1  35:06.52 VirtualBox         
14125 root      20   0  366m 118m  26m S  3.0  1.5  30:18.57 Xorg               
16393 jmoe      20   0 1245m 248m  51m S  1.7  3.1   9:07.27 firefox            
24200 jmoe      20   0 1879m 307m  47m S  1.7  3.8  12:00.58 thunderbird-bin    
14959 jmoe      20   0  705m  24m  14m S  1.0  0.3   1:15.76 gnome-terminal     
16267 jmoe      20   0  340m  17m  12m S  0.7  0.2   6:16.21 gkrellm            
23162 jmoe      20   0 19392 1732 1124 R  0.7  0.0   0:00.03 top

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--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Does this still happen with the latest software, i.e. kernel 3.10, mesa 9.2,
xf86-video-nouveau 1.0.9? (Kernel 3.11+ apparently has some issues for some
NVC1 users, although feel free to try it.)

Also, does this happen on an untainted kernel? (i.e. without virtualbox modules
ever being loaded).

Lastly, you can use 'perf' (in tools/perf in the linux-kernel sources)
to tell
where cpu time is going. Running perf record -g -p $gnome_shell_pid; perf
report may be instructive.

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Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Uneven, jerky mouse         |[NVC1] Uneven, jerky mouse
                   |movement, increasing CPU    |movement, increasing CPU
                   |usage                       |usage

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--- Comment #2 from James Moe <jimoe at sohnen-moe.com>
---
>Does this still happen with the latest software, i.e. kernel 3.10,
> mesa 9.2, xf86-video-nouveau 1.0.9?
>
I do not know. My system is not that up to date. v3.7.10-1.16-desktop x86_64
> Also, does this happen on an untainted kernel?
>
Yes.
> Lastly, you can use 'perf' (in tools/perf in the linux-kernel
sources) ...
>
There is no "perf" executable in that directory.

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--- Comment #3 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to comment #2)
> >Does this still happen with the latest software, i.e. kernel 3.10,
> > mesa 9.2, xf86-video-nouveau 1.0.9?
> >
> I do not know. My system is not that up to date. v3.7.10-1.16-desktop
x86_64
Perhaps I was unclear. The implication was "update your system to these
packages and see if it still happens".
> 
> > Also, does this happen on an untainted kernel?
> >
> Yes.
To be clear, loading the virtualbox modules taints the kernel.
> 
> > Lastly, you can use 'perf' (in tools/perf in the linux-kernel
sources) ...
> >
> There is no "perf" executable in that directory.
Yes there is, if you build it. I'm sure there are plenty of wikis about it
on
the internet if you have trouble getting it to work.

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James Moe <jimoe at sohnen-moe.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from James Moe <jimoe at sohnen-moe.com> ---
opensuse v13.1
  linux v3.11.6-4-desktop x86_64
  gnome 3.10.1
  nouveau video driver 1.0.9

After upgrading to opensuse 13.1 the issue is longer evident.

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James Moe <jimoe at sohnen-moe.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #5 from James Moe <jimoe at sohnen-moe.com> ---
linux 3.11.10-7-desktop x86_64
gnome 3.10.2
Gallium 0.4 on NVC1

This issue has surfaced again in a slightly different form recently, within the
last two weeks.

The mouse data stream is interrupted and restarted at random intervals, in
generally less than a minute. By "interrupted" I mean that the current
mouse
state is cleared; if button1 is down, it appears no longer down. And
"restarted" means that the mouse state is restored immediately after
it is
interrupted but it appears as a new state: button1 is now down.

It makes button1 click-drag a chancy process as the stream is sometimes
interrupted/restarted quickly enough that it appears as a double-click followed
by click-drag.

Still using a kernel "tainted" by VirtualBox.

This new aspect has no obvious affect on CPU usage.

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--- Comment #6 from James Moe <jimoe at sohnen-moe.com> ---
linux 3.11.10-7-desktop x86_64
gnome 3.10.2
Gallium 0.4 on NVC1

This issue has surfaced again in a slightly different form recently, within the
last two weeks.

The mouse data stream is interrupted and restarted at random intervals, in
generally less than a minute. By "interrupted" I mean that the current
mouse
state is cleared; if button1 is down, it appears no longer down. And
"restarted" means that the mouse state is restored immediately after
it is
interrupted but it appears as a new state: button1 is now down.

It makes button1 click-drag a chancy process as the stream is sometimes
interrupted/restarted quickly enough that it appears as a double-click followed
by click-drag.

Still using a kernel "tainted" by VirtualBox.

This new aspect has no obvious affect on CPU usage.

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--- Comment #7 from Ilia Mirkin <imirkin at alum.mit.edu> ---
As always, step 1 is "try the latest". That means kernel 3.14.x, mesa
10.1. I'm
specifically thinking about commit 7d3428cd4b2ad51af86fdbdf8284ca38fa95e601 in
the kernel, which fixed some lag issues for a compton user.

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--- Comment #8 from James Moe <jimoe at sohnen-moe.com> ---
openSuse 13.2
linux 3.16.6-2-desktop x86_64
Gnome 3.14.1
Gallium 0.4 on NVC1
nVidia geforce gt 730

It's baaaack.

The mouse movement is not jerky like the original report.

The CPU usage increases quite quickly this time around. The usage value (from
TOP) starts at about 2 - 3% for gnome-session, increases to about 15% in 24
hours. I have installed opensuse 13.2 on two other computers that have ATI
graphics adapters; they do not exhibit this issue.

If I do not boot every morning, the desktop is likely to freeze by the third
day of uptime.

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Tobias Klausmann <tobias.klausmann at mni.thm.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |NEEDINFO

--- Comment #9 from Tobias Klausmann <tobias.klausmann at mni.thm.de> ---
Try the latest software and see if this happens there:

Kernel:stable for a 3.18 kernel
X11:XOrg for the X Stack + Mesa

Report back anyway...

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James Moe <jimoe at sohnen-moe.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |UNCONFIRMED
     Ever confirmed|1                           |0

--- Comment #10 from James Moe <jimoe at sohnen-moe.com> ---
opensuse 13.2
linux 3.16.7-21-desktop x86_64
nvidia GF108 [GeForce GT 730]
gnome 3.14.5
xf86-video-nouveau 1.0.11

The increasing CPU usage is still an issue. Apparently I am the only person to
have this problem. :-(

I have been using Xfce; I switched back to Gnome for a while because I prefer
it. It was disappointing that this has not been resolved.

It seems to be a nvidia-related (or nouveau?) problem. None of the other linux
systems exhibit the CPU usage; the other computers have ATI (built-in or addon)
video controllers.

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--- Comment #11 from James Moe <jimoe at sohnen-moe.com> ---
openSUSE Leap 42.1
linux 4.1.12-1-default x86_64
Gnome 3.16.2
nouveau 2.4.65
nvidia gt 730

This issue has not been affected by any updates in the last two years. I just
updated to updated openSUSE Leap 42.1 which has fairly recent versions of
Gnome, etc.

I am deeply disappointed that Gnome's CPU usage proceeded to climb from its
initial usage of about 2% to 5% 12 hours later. It follows an identical pattern
as originally reported.

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--- Comment #12 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Have you tried using 'perf' to determine what's sucking up the CPU?

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--- Comment #13 from James Moe <jimoe at sohnen-moe.com> ---
How do I use perf to monitor Gnome's CPU usage?

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--- Comment #14 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to James Moe from comment #13)
> How do I use perf to monitor Gnome's CPU usage?
Well, presumably it's not "gnome" using CPU, it's some
specific process. So
then you just do

perf record -g -p pid

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--- Comment #15 from James Moe <jimoe at sohnen-moe.com> ---
(In reply to Ilia Mirkin from comment #14)
> > How do I use perf to monitor Gnome's CPU usage?
> 
> Well, presumably it's not "gnome" using CPU, it's some
specific process. So
> then you just do
> 
> perf record -g -p pid
>
Would I use "perf top" to identify suspect processes? Since I do not
know which
process is the problem, I cannot provide a PID for the "-p" option.

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--- Comment #16 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to James Moe from comment #15)
> (In reply to Ilia Mirkin from comment #14)
> > > How do I use perf to monitor Gnome's CPU usage?
> > 
> > Well, presumably it's not "gnome" using CPU, it's
some specific process. So
> > then you just do
> > 
> > perf record -g -p pid
> >
> Would I use "perf top" to identify suspect processes? Since I do
not know
> which process is the problem, I cannot provide a PID for the "-p"
option.
I've never used 'perf top' although it could perhaps be useful here.
You could
identify the process with 'top'.

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--- Comment #17 from James Moe <jimoe at sohnen-moe.com> ---
Using TOP the most likely suspect is "gnome-shell". How long should I
collect
data to get a good profile of its usage?

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--- Comment #18 from Ilia Mirkin <imirkin at alum.mit.edu> ---
I dunno... a minute or two should be fine. I'm assuming that it's
consistently
using 5-10% cpu?

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--- Comment #19 from James Moe <jimoe at sohnen-moe.com> ---
Created attachment 119744
  --> https://bugs.freedesktop.org/attachment.cgi?id=119744&action=edit
perf data just after starting Gnome

perf ran for about 2 minutes to collect this data. It was run just after
starting Gnome.

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--- Comment #20 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Unfortunately I can't decode that. It relies on the exact symbols on your
machine... could you also run "perf report" and see if anything
interesting
pops up? Note that the first column with percents tells you how much time is
spent in that function and all its descendents, while the second percentage
tells you how much time is spent in *just* that function (but not the functions
it calls).

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--- Comment #21 from James Moe <jimoe at sohnen-moe.com> ---
Created attachment 119745
  --> https://bugs.freedesktop.org/attachment.cgi?id=119745&action=edit
perf data after Gnome had been running about 18 hours

perf data of gnome-shell after 18 hours of uptime. TOP shows that gnome-shell
had increased its average CPU usage by a factor of three, from 2.5% to 7%.

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James Moe <jimoe at sohnen-moe.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #119744|0                           |1
        is obsolete|                            |
 Attachment #119745|0                           |1
        is obsolete|                            |

--- Comment #22 from James Moe <jimoe at sohnen-moe.com> ---
Created attachment 119752
  --> https://bugs.freedesktop.org/attachment.cgi?id=119752&action=edit
perf data - the initial screenfull of each data set

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--- Comment #23 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Great... that points to something in nouveau. But you need debug symbols to
make it useful.

Please get debug symbols, and then open up that top 38% node and see what's
inside :)

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--- Comment #24 from James Moe <jimoe at sohnen-moe.com>
---
> Please get debug symbols
>
Which symbol set(s)? I already have the kernel-syms.

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Sbcglobal.Net Email Phone Support 18558566451 <sbcglobalservice at
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           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |https://www.wikigenes.org/e
                   |                            |/author/e/1450518.html

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--- Comment #26 from James Moe <jimoe at sohnen-moe.com> ---
Was this ever resolved?

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--- Comment #27 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to James Moe from comment #26)
> Was this ever resolved?
No, although someone else came in the other day to #nouveau complaining about
high CPU usage when there's tons of output on an xterm. I've seen that
behavior
myself although I haven't investigated it.

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Martin Peres <martin.peres at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #28 from Martin Peres <martin.peres at free.fr> ---
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