Messages in this thread | | | From | Andi Kleen <> | Subject | Re: Too many poll_idle cpu calls in kernel 3.2 rc-series | Date | Mon, 28 Nov 2011 11:33:28 -0800 |
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"Nicolas Kalkhof" <nkalkhof@web.de> writes:
> the kernel v3.2 series shows excessive poll_idle calls during system idle phases causing the cpu > (mobile i7 2620M) to heat up and draw additional 10% more power. All kernel versions between > 3.2-rc1 and 3.2-rc3 are affected. Perf Top and Powertop both show the same issue. > I've posted a similar bug report before: http://marc.info/?l=linux-kernel&m=132164909313594&w=2 > and used perf top -U to verify the poll_idle calls as requested.
So it didn't happen with earlier kernels? I would suggest a git bisect in this case.
-Andi
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