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SubjectRe: [PATCH v7 0/8] Tunable sched_mc_power_savings=n
Hi, Vaidyanathan.
It's very late reponse. :(

> Results:
> --------
>
> Basic functionality of the code has not changed and the power vs
> performance benefits for kernbench are similar to the ones posted
> earlier.
>
> KERNBENCH Runs: make -j4 on a x86 8 core, dual socket quad core cpu
> package system
>
> SchedMC Run Time Package Idle Energy Power
> 0 81.68 52.83% 54.71% 1.00x J 1.00y W
> 1 80.70 36.62% 70.11% 0.95x J 0.96y W
> 2 74.95 19.53% 85.92% 0.90x J 0.98y W
>
> The results are marginally better than the previous version of the
> patch series which could be within the test variation.
>
> Please feel free to test, and let me know your comments and feedback.
> I will post more experimental results with various benchmarks.

Your result is very interesting.
level 2 is more fast and efficient of power.

What's major contributor to use less time in level 2?
I think it's cache bounce is less time than old.
Is right ?

I want to test SCHED_MC but I don't know what you use to benchmark about power.
How do I get the data about 'Package, Idle, Energy, Power'?

--
Kinds regards,
MinChan Kim


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