Can someone give me a hand with applying the patch, please?
On Thu, May 20, 2010 at 3:04 PM, Rocko <[email protected]> wrote: > I applied that patch to the 2.6.34 amd64 kernel and it does reduce the > load balancing wakeups somewhat on my dual core PC. It went from around > 50 per second to 35 after the patch (and that's running Skype and > iwlagn, which average 10 and 15 wakeups per second respectively - the > load balancing wakeups are higher when more things are running: when I > am not running X, the load balancing wakeups are much fewer (under 10)). > > I also tried compiling a 2.6.34 kernel *without* multi-core support for > my 32 bit single core PC, and it does reduce the number of load > balancing wakeups (although to my surprise they still happen). > > @Flávio Etrusco (comment 15): it looks like your nvidia driver is > causing a lot of wakeups, which you can fix with the xorg.conf option: > > Option "OnDemandVBlankInterrupts" "True" > > and if you're worried about power usage, the nvidia driver defaults to > max performance, which means max power usage. You can put an entry in > xorg.conf that makes it reduce performance (and power) when on battery > but still give max performance on AC for gaming, etc (see eg > http://linux.aldeby.org/nvidia-powermizer-powersaving.html for details). > > -- > 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: Confirmed > 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 member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
