Significant overall system's performance degradation in Karmic

[Michal Bližňák]

Overall system's performance under high CPU load significantly degrades on Ubuntu 9.10 RC karmic. For example during compilation of source code on all CPUs/cores all system's responses are very slow and the system is nearly unusable. The problem occurs only with kernel shipped with this distribution (2.6.31-14-generic, 32bit). With kernels downloaded from http://kernel.ubuntu.com/~kernel-ppa/mainline/ (tested with v2.6.31.5 and v2.6.32-rc5) everything works fine so it looks like there is something wrong with scheduler's configuration. Observed on Lenovo ThinkPad R61i with Ubuntu 9.10 RC 32bit.

ProblemType: Bug
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: michal 2550 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfe100000 irq 17'
   Mixer name : 'Conexant CX20549 (Venice)'
   Components : 'HDA:14f15045,17aa20db,00100100'
   Controls : 18
   Simple ctrls : 8
Date: Sat Oct 24 12:02:19 2009
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=2cbe4d6e-2d71-4821-8947-df1090d03544
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate i386 (20091020.3)
MachineType: LENOVO 8932FDG
Package: linux-image-2.6.31-14-generic 2.6.31-14.48
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-14-generic root=UUID=b97ce063-2518-4669-83bf-e32750a4f134 ro quiet splash
ProcEnviron:
 LANG=cs_CZ.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-14-generic N/A
 linux-firmware 1.24
SourcePackage: linux
Uname: Linux 2.6.31-14-generic i686
XsessionErrors:
 (gnome-settings-daemon:2564): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (gnome-settings-daemon:2564): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (polkit-gnome-authentication-agent-1:2695): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (nautilus:2674): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (awn-applet-activation:2854): Vte-CRITICAL **: vte_terminal_set_background_image_file: assertion `VTE_IS_TERMINAL(terminal)' failed
dmi.bios.date: 03/24/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7OETB4WW (2.14 )
dmi.board.name: 8932FDG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7OETB4WW(2.14):bd03/24/2008:svnLENOVO:pn8932FDG:pvrThinkPadR61:rvnLENOVO:rn8932FDG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 8932FDG
dmi.product.version: ThinkPad R61
dmi.sys.vendor: LENOVO

[Joakim Plate (elupus)]

For me i wouldn't call it unusable, but very unresponsive. Way worse than the same system with jaunty on it (dualbooted). Have not tried any other kernels than current Karmic kernel thou (and all historic ones of karmic)

[Jeremy Foshee (jeremyfoshee)]

Hi Michal,

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? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 459670

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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[Michal Bližňák (michal-bliznak-tbu)]

Currently I'm using kernel 2.6.32.9 (http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.32.9/) and it seems to work fine. The bug I've reported affects the official Ubuntu release (9.10) only. Other kernels downloaded from kernel.ubuntu.com worked fine (at least for me).

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]