Public bug reported:
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
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386
--
Significant overall system's performance degradation in Karmic
https://bugs.launchpad.net/bugs/459670
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