Public bug reported:
karmic seems to be making poor use of my CPU. (or top and powertop are
giving odd numbers). CPU is atom with hyperthreading.
while doing upgrade (and dkms was building the openafsmodule) i checked
powertop and top. and was surprised to see the the CPU spending half its
time at 50% clock speed. CPU is reported to be about 50% busy, but task
only add up to about 30%. disk wait is very low less than 1%
surely CPU should be at max, and cc should be taking up 100% of one of
the hyperthreads.
ProblemType: Bug
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: sam 2826 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfc140000 irq 22'
Mixer name : 'Realtek ALC269'
Components : 'HDA:10ec0269,17aa6000,00100004'
Controls : 17
Simple ctrls : 11
Date: Mon Dec 14 12:06:19 2009
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=31aa381e-4427-4ffb-82aa-750d830e05d1
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: LENOVO 20021,2959
NonfreeKernelModules: openafs wl
Package: linux-image-2.6.31-16-generic 2.6.31-16.53
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-16-generic
root=UUID=62565c68-43ab-4e6e-8883-d11d63680ce2 ro quiet splash
ProcEnviron:
PATH=(custom, user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-16.53-generic
RelatedPackageVersions:
linux-backports-modules-2.6.31-16-generic N/A
linux-firmware 1.26
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
SourcePackage: linux
Uname: Linux 2.6.31-16-generic i686
XsessionErrors:
(gnome-settings-daemon:2844): GLib-CRITICAL **: g_propagate_error: assertion
`src != NULL' failed
(nautilus:2876): Eel-CRITICAL **: eel_preferences_get_boolean: assertion
`preferences_is_initialized ()' failed
(polkit-gnome-authentication-agent-1:2892): GLib-CRITICAL **:
g_once_init_leave: assertion `initialization_value != 0' failed
(gnome-panel:2873): Gdk-WARNING **:
/build/buildd/gtk+2.0-2.18.3/gdk/x11/gdkdrawable-x11.c:952 drawable is not a
pixmap or window
(nautilus:9957): Eel-CRITICAL **: eel_preferences_get_boolean: assertion
`preferences_is_initialized ()' failed
dmi.bios.date: 05/13/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 19CN16WW
dmi.board.name: MoutCook
dmi.board.vendor: LENOVO
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnLENOVO:bvr19CN16WW:bd05/13/2009:svnLENOVO:pn20021,2959:pvrLenovoIdeapadS12:rvnLENOVO:rnMoutCook:rvrNotApplicable:cvnLENOVO:ct10:cvrN/A:
dmi.product.name: 20021,2959
dmi.product.version: Lenovo Ideapad S12
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386
--
poor cpu utilisation
https://bugs.launchpad.net/bugs/496510
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