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SubjectRe: RFC: revert request for cpuidle patches e11538d1 and 69a37bea
Date
On Saturday, July 27, 2013 02:22:53 AM Len Brown wrote:
> >> OK, I'll queue up the reverts as fixes for 3.11-rc4.
> >
> > So, the reverts are on the fixes-next branch of the linux-pm.git tree that you
> > can access at
> >
> > http://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git/log/?h=fixes-next
> >
> > However, they are not simple reverts as we've had some non-trivial changes on
> > top of those commits already, so I'd appreciate it a lot if somebody could
> > double check if I didn't break anything in them.
>
> I've verified that the reverts improve netperf TCP_RR performance.
>
> Here I've got two Xeon's, slightly different, so I run in both directions.
> Also I run two ways -- Out-of-the-box, plus with cpufreq
> set to max frequency. The reverts improve all 4 cases:
>
> JKT → IVT IVT → JKT
>
> 3.11.0-rc2 baseline w/o revert Out of Box
>
> 20420 19963
> 20658 19915
> 20298 20320
>
> 3.11.0-rc2 baseline w/o revert max freq
>
> 59658 51427
> 59663 51503
> 59416 51343
>
> 3.11.0-rc2-00002-g74bce39 Linux-pm “fixes-next” branch
>
> 3.11.0-rc2-00002-g74bce39 Out of box
> 23227 22056
> 23306 22125
> 23387 40226 40k result saw some 2.2 ghz
> vs 1.2 ghz in other runs
> 21991
>
> 3.11.0-rc2-00002-g74bce39 Max-freq
> 67240 57645
> 64880 56764
> 65924 57435
>
> Tested-by: Len Brown <len.brown@intel.com>

Many thanks Len!

Rafael

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