Re: [PATCH v7 0/8] Tunable sched_mc_power_savings=n

[MinChan Kim]

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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/