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  1. Bug #524281
  2. Comment #72

Comment 72 for bug 524281

Revision history for this message
Antonio (tritemio) wrote : Re: [Bug 524281] Re: Tens of wakes per second in "[kernel scheduler] Load balancing tick" on Core 2 Duo even with only 1 core enabled

I agree with the last two comments. Battery lasts half of the time it
lasts on windows 7 and the laptop overheats significantly on a large
spectrum of machines.

This should be a critical bug.

BTW, is there an "official" kernel we can test against this bug? If
yes can anyone post a link please?

Thanks,
Antonio

Il 15 luglio 2010 13.24, alx5000 <email address hidden> ha scritto:
> I wholeheartedly agree with mabawsa. I've downgraded to Karmic for this very
> reason. My battery lasts as long as it should, and my laptop very rarely
> overheats (it ran hot as hell with Lucid).
>
> 2010/7/15 mabawsa <email address hidden>
>
>> If this effects the time the user can use the laptop on battery so much
>> surely the importance should be set to critical (I am getting double the
>> life using Windows 7 even with all that powertop can do).
>> Its difficult to convince users to try linux if you say it will decrease
>> the performance of the machine.
>>
>> --
>> Tens of wakes per second in "[kernel scheduler] Load balancing tick" on
>> Core 2 Duo even with only 1 core enabled
>> https://bugs.launchpad.net/bugs/524281
>> You received this bug notification because you are a direct subscriber
>> of the bug.
>>
>> Status in “linux” package in Ubuntu: Triaged
>> Status in “linux-2.6” package in Debian: Incomplete
>>
>> Bug description:
>> 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 noapic, nolapic, maxcpus and nosmp 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
>>
>>
>>
>> To unsubscribe from this bug, go to:
>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/524281/+subscribe
>>
>
> --
> Tens of wakes per second in "[kernel scheduler] Load balancing tick" on Core 2 Duo even with only 1 core enabled
> https://bugs.launchpad.net/bugs/524281
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “linux” package in Ubuntu: Triaged
> Status in “linux-2.6” package in Debian: Incomplete
>
> Bug description:
> 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 noapic, nolapic, maxcpus and nosmp 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
>
>
>
> To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/524281/+subscribe
>