On Fri, Jun 17, 2016 at 10:40 AM, Jisheng Zhang [off-list ref] wrote:

Dear all,

On Fri, 17 Jun 2016 16:30:23 +0800 Jisheng Zhang wrote:

quoted

Dear all,

I found one regression: In an idle system, wakeups/s (reported by powertop)
is increased a lot, e.g on a intel snb 4 core platform, the wakeup event
number is increased from 8 wakeups/s to 24 wakeup/s. bisect points to
this commit. I could send detailed bisect log if it's wanted.

more information maybe useful: after the commit, the top two wakeup source
are

        Process        [rcu_sched]

        Timer          tick_sched_timer

And what was there before the commit?

Granted, I'm not seeing this on my systems.

Paul, Peter, any ideas about what may be going on here?

Thanks,
Rafael