compiz team mailing list archive

[Michael Knap <michael.j.knap@xxxxxxxxx>]

Sorry about the text in the post. I wanted to give you guys something
better, so I ran perf record for a a few seconds. I then perf report
>> perf_report.

The report is attached. It might be easier to read.

Michael Knap

http://michaelknap.net
Instructor and Researcher
Mathematics and Controls Engineering
Center of Excellence in Information Systems
Tennessee State University


On Sun, Jan 29, 2012 at 10:10 PM, Michael Knap <michael.j.knap@xxxxxxxxx> wrote:
> I just wanted to say that there is seems to be no evidence of memory
> usage growing. I am not sure how a vector could be growing without
> memory growing.I guess it could be growing in a pre-allocated space,
> though. But another update... the work pc shows compiz now at 47%
> since Fri afternoon. I ran another perf top -p compizPID on it. I
> think my previous output was truncated, so here is another output with
> more info in the line. I guess this is some kind of a trace. Maybe it
> will help. Finally, I will have to restart compiz on my work pc
> tomorrow. Is there any more info anyone would like to gather while we
> have an opportunity to get to this bug ?
>
>   PerfTop:     372 irqs/sec  kernel: 1.9%  exact:  0.0% [1000Hz
> cycles],  (target_pid: 1898)
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>             samples  pcnt function
>
>
>
>
>                                         DSO
>             _______ _____
> __________________________________________________________________________________________________________________________________________
>
>
>
>                 _______________________________
>
>             5419.00 97.0% __gnu_cxx::__normal_iterator<int*,
> std::vector<int, std::allocator<int> > >
> std::__find<__gnu_cxx::__normal_iterator<int*, std::vector<int,
> std::allocator<int> > >, int>(__gnu_cxx::__normal_iterator<int*,
> std::vector<int, std::allocator<int> > >,
> __gnu_cxx::__normal_iterator<int*, std::vector<int,
> std::allocator<int> > >, int const&, std::random_access_iterator_tag)
> libnux-graphics-1.0.so.0.1600.0
>
>
> Thank you for all input and work !
>
>
> Michael Knap
>
> http://michaelknap.net
> Instructor and Researcher
> Mathematics and Controls Engineering
> Center of Excellence in Information Systems
> Tennessee State University
>
>
>
> On Sun, Jan 29, 2012 at 9:34 PM, Daniel van Vugt <vanvugt@xxxxxxxxx> wrote:
>> Admittedly it should probably be using std::set (find = O(lgN)) instead
>> of std::vector (find = O(N)). But we might be looking at the wrong code
>> completely...
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/888039
>>
>> Title:
>>  Gradual degradation in desktop performance.
>>
>> Status in Compiz:
>>  Confirmed
>> Status in “compiz” package in Ubuntu:
>>  Confirmed
>>
>> Bug description:
>>  Over the span of 1-3 days I see my desktop consistently become more
>>  sluggish. The functions most affected are window movement, file icon
>>  movement, and sometimes window resizing. Other animations (such as
>>  minimizing fades, switching desktops, expo mode) are not affected when
>>  this degradation occurs. They remain smooth; however, I have let the
>>  problem go on as long as to find out that eventually all desktop
>>  animations/effects will degrade, it just takes a lot lot longer. I
>>  find that my actual 3D gaming goes unaffected (though I have no data
>>  to back that up, perhaps it does).
>>
>>  I have recorded the output of 'ps auxw' and have slowly watched the
>>  VSZ and RSS memory columns creep upwards. A fresh compiz session will
>>  see 675164 and 169860, respectively. After a day or two it will result
>>  in as high as 878552 and 255664. I have attached a log output from an
>>  hourly cron job (though I had suspended for a few days because of
>>  travel).
>>
>>  After the degradation has occurred compiz will consistently use higher
>>  CPU. Dragging a terminal window while watching top: before: ~10%,
>>  after: ~30 percent.
>>
>>  This has been an issue since 11.04 for me on both my Intel i915 and
>>  Nvidia (proprietary) machines (had an 8600 GT and upgraded to 560 GTX,
>>  both having the same issue). However, the nvidia machine is where it
>>  really hurts, _always_ happening within a day or two, while the i915
>>  machine is pretty reliable overall with certain instances of
>>  degradation (used to be affected just as badly in 11.04).
>>
>>  I will attach two videos demonstrating behavior before and after.
>>  ---
>>  ApportVersion: 1.23-0ubuntu4
>>  Architecture: amd64
>>  CheckboxSubmission: 33c9cec13de798ee31ce4ea2f2cbd4df
>>  CheckboxSystem: 4ed15c40009aa6f7770f606350a390a2
>>  CompizPlugins: [core,detection,composite,opengl,decor,regex,winrules,compiztoolbox,animation,grid,vpswitch,snap,place,gnomecompat,resize,move,mousepoll,imgpng,workarounds,session,expo,wall,fade,scale,unityshell]
>>  DistroCodename: oneiric
>>  DistroRelease: Ubuntu 11.10
>>  DistroVariant: ubuntu
>>  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
>>  NonfreeKernelModules: nvidia
>>  Package: compiz 1:0.9.6+bzr20110929-0ubuntu5vv1
>>  PackageArchitecture: all
>>  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
>>  Tags:  oneiric running-unity oneiric running-unity ubuntu
>>  Uname: Linux 3.0.0-12-generic x86_64
>>  UnreportableReason: This is not a genuine Ubuntu package
>>  UpgradeStatus: Upgraded to oneiric on 2011-10-13 (26 days ago)
>>  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
>>
>> To manage notifications about this bug go to:
>> https://bugs.launchpad.net/compiz/+bug/888039/+subscriptions


** Attachment added: "perf_report"
   https://bugs.launchpad.net/bugs/888039/+attachment/2700652/+files/perf_report

-- 
You received this bug notification because you are a member of compiz
packagers, which is subscribed to compiz in Ubuntu.
https://bugs.launchpad.net/bugs/888039

Title:
  Gradual degradation in desktop performance.

To manage notifications about this bug go to:
https://bugs.launchpad.net/compiz/+bug/888039/+subscriptions