I tried the rc6-power3 kernel and these are the powertop numbers Wakeups-from-idle per second : 258.3 interval: 15.0s no ACPI power usage estimate available Top causes for wakeups: 35.2% ( 70.1) [kernel scheduler] Load balancing tick 20.7% ( 41.1) [extra timer interrupt] 6.5% ( 12.9) [iwlagn] <interrupt> 6.0% ( 11.9) firefox-bin 5.5% ( 11.0) nautilus 5.0% ( 9.9) syndaemon 4.1% ( 8.1) [kernel core] usb_hcd_poll_rh_status (rh_timer_func) 2.4% ( 4.9) [kernel core] hrtimer_start (tick_sched_timer) 2.2% ( 4.3) [TLB shootdowns] <kernel IPI>
So the results are worse than with the rc5-power2 kernel but better than the original rc5 Brian Rogers kernel in that there are no wakeups from [kernel core] hrtimer_start (tick_sched_timer) which amounts to about 40 wakeups. These changes are clearly influencing this problem but I feel like we need an expert (kernel dev) to interpret what is going on with the benchmarks from various code changes..... -- 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 ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
