Re: [PATCH v3 linux-next] cpufreq: ondemand: Calculate gradient ofCPU load to early increase frequency

[Stratos Karafotis]

On 04/10/2013 06:22 AM, Viresh Kumar wrote:
> On 9 April 2013 22:26, Stratos Karafotis <stratosk@xxxxxxxxxxxx> wrote:
> > On 04/05/2013 10:50 PM, Stratos Karafotis wrote:
> > > Hi Viresh,
> > >
> > > On 04/04/2013 07:54 AM, Viresh Kumar wrote:
> > > > Hi Stratos,
> > > >
> > > > Yes, your results show some improvements. BUT if performance is the only
> > > > thing
> > > > we were looking for, then we will never use ondemand governor but
> > > > performance
> > > > governor.
> > > >
> > > > I suspect this little increase in performance must have increased power
> > > > numbers
> > > > too (significantly). So, if you can get numbers in the form of
> > > > power/performance
> > > > with and without your patch, it will be great.
> > > >
> > > > --
> > > > viresh
> > >
> > > I run some more tests. I increased the number of iterations to 100 (from
> > > 20).
> > > I also test for counter 1,000,000 (~4200us), 5,000,000 (~10000us),
> > > 15,000,000 (~30000us).
> > >
> > > This time, I also extracted statistics from cpufreq_stats driver. I think
> > > this will be an
> > > indication for power consumption. Below the results and attached the
> > > program I used for to
> > > get these numbers.
> >
> >
> > Any comments would be appreciated.
>
> Sorry, i forgot about this mail earlier..
>
> Your performance numbers look improved but i am still not sure about
> power consumption. But as this is not going to be the default settings, i
> think we can take this patch.
>
> @Rafael:?

Hi Rafael,

I'm sorry for bothering you again for this patch.
Are these number adequate? Should I provide more benchmark results?

Thanks for your time.

Stratos
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