Re: [RFC] Introduce greedy hrtimer walk on idle

From: Venki Pallipadi
Date: Tue Nov 01 2011 - 19:55:51 EST


On Mon, Oct 31, 2011 at 7:11 PM, alex shi <lkml.alex@xxxxxxxxx> wrote:
>> Hi Alex,
>>
>> It should apply cleanly over 3.0. Thanks for testing the patch..
>
> I tested the patch against 3.1 kernel for specpower benchmark on our
> machine, westmere core laptop Thinkpad t410(internal name lkp-t410),
> and on Romely-EP machine(lkp-sb03). No clear power or performance
> change found. the performance and power has no clear change for every
> level system load. from 0 to 100%.

Thanks Alex for testing this. Likely that with specpower there are not
many active timers. Was the run with run level 5 and with all the system daemons
that come with distro active?

Thanks,
Venki
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