Comment 0 for bug 524281

Revision history for this message
Flávio Etrusco (etrusco) wrote : Tens of wakes per second in "[kernel scheduler] Load balancing tick" on Core 2 Duo with 1 core disabled in BIOS

powertop reports above 70 wakes per second in "[kernel scheduler] Load balancing tick" task, and above 200 when there's any little load, running on a Core 2 Duo processor (T6500) with a single core enabled (multicore disabled in BIOS).
Will still try disabling apic, lapic, cpu in the boot parameters and reproduce it with the mainline kernel.

ProblemType: Bug
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
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: etrusco 1606 F.... pulseaudio
                      etrusco 15151 F.... foobar2000.exe
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfddf8000 irq 22'
   Mixer name : 'Realtek ALC269'
   Components : 'HDA:10ec0269,1b0a4009,00100004 HDA:11c11040,1b0a4007,00100200'
   Controls : 19
   Simple ctrls : 11
Card1.Amixer.info:
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfebec000 irq 17'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100100'
   Controls : 4
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Fri Feb 19 05:25:42 2010
DistroRelease: Ubuntu 10.04
EcryptfsInUse: Yes
MachineType: Philco PHN10XXX.
Package: linux-image-2.6.32-13-generic 2.6.32-13.18
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-13-generic root=UUID=d482e94f-9370-4ad2-9536-986541003db5 ro acpi.power_nocheck=1 acpi_osi=linux radeon.blacklist=yes
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-13.18-generic
Regression: No
RelatedPackageVersions: linux-firmware 1.29
Reproducible: Yes
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
TestedUpstream: No
Uname: Linux 2.6.32-13-generic i686
dmi.bios.date: 06/01/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.01
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.vendor: PEGATRON CORP.
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 10
dmi.chassis.vendor: PEGATRON CORP.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.01:bd06/01/2009:svnPhilco:pnPHN10XXX.:pvr1.01:rvnPEGATRONCORP.:rn:rvrTobefilledbyO.E.M.:cvnPEGATRONCORP.:ct10:cvrToBeFilledByO.E.M.:
dmi.product.name: PHN10XXX.
dmi.product.version: 1.01
dmi.sys.vendor: Philco