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[Bug 455156] [NEW] Compiz performance drops over time on netbook


Public bug reported:

Binary package hint: compiz

On a fresh boot up, launching compiz benchmark shows me that I get a
full 60fps on my eeepc 1000h netbook. However from time to time the
rendering performance will drop to around 30fps and stay that way for
the remainder of the session, even though no applications are running
and the cpu is idle.

I tried to investigate this further by having the compiz bench mark running at all times. I have notice that this bug seams to appear after either running a youtube video in chromium, or after using awant for a while, or ever just launching the terminal with transparent background (sometimes). So it doesnt really seem to be specific to one application and doesnt happen ever time. What will happen is that the frame rate will drop to 30fps, which is something that is possible normal while playing a video or using something as intensive as awant, however the problem is that the benchmark will stay at 30fps, even after the offending application was closed, and desktop video performance will be clearly slowed down. 
Looking at the cpu meter, there is nothing processor intensive going on that could account for the persistent performance loss. 

I am able to get the system back to rendering at 60fps only by turning
compiz off and then back on again, and there are times when avant and
any youtube videos run just fine and dont cause any persistent slow

I am by no means a computer programmer, but it seems as though there is
some type of memory leak either in compiz or the latest Intel video
driver causing this problem.

This is the video I last viewed right before the slow down happened,
however I have not verified that it will in fact happen very time.

Running the latest Karmic beta, fully updated as of the time of this

ProblemType: Bug
Architecture: i386
CompizPlugins: [core,move,resize,place,decoration,animation,ccp,workarounds,neg,commands,session,gnomecompat,png,extrawm,resizeinfo,video,vpswitch,mousepoll,text,svg,regex,imgjpeg,dbus,snap,wall,fade,expo,ezoom,staticswitcher,scale,scaleaddon,bench]
Date: Mon Oct 19 00:28:13 2009
DistroRelease: Ubuntu 9.10
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: ASUSTeK Computer INC. 1000H
Package: compiz 1:0.8.4-0ubuntu1
PackageArchitecture: all
PciDisplay: 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] (rev 03)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-14-generic root=UUID=5496491f-620b-4ad9-bd88-fa2a4b23128e ro quiet splash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
 xserver-xorg 1:7.4+3ubuntu5
 libgl1-mesa-glx 7.6.0-1ubuntu4
 libdrm2 2.4.14-1ubuntu1
 xserver-xorg-video-intel 2:2.9.0-1ubuntu2
 xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1
SourcePackage: compiz
Uname: Linux 2.6.31-14-generic i686
XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf'
dmi.bios.date: 06/11/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2003
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1000H
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTek Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2003:bd06/11/2009:svnASUSTeKComputerINC.:pn1000H:pvrx.x:rvnASUSTeKComputerINC.:rn1000H:rvrx.xx:cvnASUSTekComputerINC.:ct10:cvrx.x:
dmi.product.name: 1000H
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.
system: distro = Ubuntu, architecture = i686, kernel = 2.6.31-14-generic

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: apport-bug i386

Compiz performance drops over time on netbook
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