Hi Len. On 09/05/10 05:16, Len Brown wrote: > (linux-pm cc'd) > >> I'm seeing a huge number of load balancing tick wakeups, with both 2.6.33 and >> current git (f1c448e0a9e99c76f4ece368714fb35a40a8daba). >> >> This has been reported as a bug in some distros: >> >> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=521944 >> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/524281 > > Unclear if your sighting is the same as those two. > > What do you see if vmware is not present? I still see a huge number, just not as huge. The number of load balancing ticks seems to increase with the number of ticks from other sources. Without vmware running I got: Cn Avg residency C0 (cpu running) (14.5%) polling 0.2ms ( 0.0%) C1 mwait 0.0ms ( 0.0%) C2 mwait 0.1ms ( 1.7%) C4 mwait 1.1ms (83.8%) P-states (frequencies) Turbo Mode 1.2% 2.21 Ghz 0.0% 1.60 Ghz 0.0% 1200 Mhz 0.1% 800 Mhz 98.7% Wakeups-from-idle per second : 907.4 interval: 15.0s no ACPI power usage estimate available Top causes for wakeups: 42.1% (435.6) [kernel scheduler] Load balancing tick 21.2% (219.6) [extra timer interrupt] 10.2% (105.6) plugin-containe 9.5% ( 98.1) pulseaudio 1.7% ( 17.9) [Rescheduling interrupts] <kernel IPI> 1.7% ( 17.1) [iwl3945] <interrupt> 1.4% ( 14.8) [kernel core] hrtimer_start (tick_sched_timer) 1.4% ( 14.3) [ata_piix] <interrupt> > What do you see if you boot single user mode, > how about with maxcpusx=1? I'll try those later today and get back to you with more info. Regards, Nigel > cheers, > Len Brown, Intel Open Source Technology Center > >> PowerTOP 1.12 (C) 2007, 2008 Intel Corporation >> >> Collecting data for 15 seconds >> >> >> Your CPU supports the following C-states : C1 C2 C3 C4 >> Your BIOS reports the following C-states : C1 C2 C4 >> Cn Avg residency >> C0 (cpu running) (40.8%) >> polling 0.7ms ( 0.1%) >> C1 mwait 0.0ms ( 0.0%) >> C2 mwait 0.1ms ( 3.2%) >> C4 mwait 0.4ms (56.0%) >> P-states (frequencies) >> Turbo Mode 7.3% >> 2.21 Ghz 0.7% >> 1.60 Ghz 0.8% >> 1200 Mhz 0.9% >> 800 Mhz 90.3% >> Wakeups-from-idle per second : 1727.3 interval: 15.0s >> no ACPI power usage estimate available >> Top causes for wakeups: >> 53.0% (1983.1) [kernel scheduler] Load balancing tick >> 27.7% (1035.1) vmware-vmx >> 8.8% (330.6) [extra timer interrupt] >> 2.3% ( 85.5) [TLB shootdowns]<kernel IPI> _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
