[Bug 524281] Re: Tens of wakes per second in "[kernel scheduler] Load balancing tick" on Core 2 Duo even with only 1 core enabled

[Jan-Philipp Litza]

Well, I was about to rant half an hour ago about people complaining here
without understanding the issue, but Richard clearly explained the issue
- thanks for that.

As for other ditros, I just booted my Arch Linux I had installed some
time ago to test this. The older powertop version 1.11 shows the wakeups
as coming from "hrtimer_start_range_ns (tick_sched_timer)" instead of
"[kernel scheduler] Load balancing tick", but has exactly the same
numbers as the newer powertop 1.12. Arch was running 2.6.34-ARCH, my
Ubuntu is running 2.6.32-24 as well as 2.6.34.1, and the figures are
identical, so NO, switching the distro doesn't help!

I'll rework the description in a moment to better describe the cause of
the problem, list possible workarounds (namely downgrading to 2.6.31 or
upgrading to -tip/Brian's ppa) and linking in the lkml threads.

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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
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