Messages in this thread | | | Date | Fri, 1 Jul 2011 13:44:19 +0800 | Subject | Re: power increase issue on light load | From | Ming Lei <> |
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Hi,
On Thu, Jun 23, 2011 at 10:43 AM, Alex,Shi <alex.shi@intel.com> wrote: > commit c8b281161dfa4bb5d5be63fb036ce19347b88c63 causes light load > benchmark use more than 10% system power on platform NHM-EP and laptop > Thinkpad T410 etc. The benchmarks are specpower and bltk office. > > I tried to track this issue, but only find deep C sate time reduced > much, about from 90% to 30~40%, the C0 or C1 state increase much on > different machines. > > Powertop just hints RES interrupts has a bit more. but when I try "perf > probe native_smp_send_reschedule". I didn't find much.
I see the problem on -rc5 in my T410 too, the fan has been ringing always and powertop reports "Wakeups-from-idle per second : 508.6".
thanks, -- Ming Lei
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