Dave Jones wrote:
> On Mon, Nov 29, 2010 at 10:38:52AM -0500, Nicolas Pitre wrote:
> > On Mon, 29 Nov 2010, David C Niemi wrote:
> >
> > > I certainly have no objections to it going into the Linaro tree, though
> > > I was hoping to get it into the main kernel tree too.
> >
> > What might p
I certainly have no objections to it going into the Linaro tree, though
I was hoping to get it into the main kernel tree too.
DCN
Christian Robottom Reis wrote:
> On Mon, Nov 22, 2010 at 11:09:03AM -0500, David C Niemi wrote:
>
>> The general problem here is that the ondemand governor is aimed
On Mon, Nov 29, 2010 at 10:38:52AM -0500, Nicolas Pitre wrote:
> On Mon, 29 Nov 2010, David C Niemi wrote:
>
> > I certainly have no objections to it going into the Linaro tree, though
> > I was hoping to get it into the main kernel tree too.
>
> What might prevent it from going into mainli
On Mon, 29 Nov 2010, David C Niemi wrote:
> I certainly have no objections to it going into the Linaro tree, though
> I was hoping to get it into the main kernel tree too.
What might prevent it from going into mainline at the moment, if
anything?
> Christian Robottom Reis wrote:
> > On Mon, Nov
Nicolas,
Can you pls merge this patch into Linaro tree?
Vishwa
On Sat, Nov 27, 2010 at 4:08 AM, Christian Robottom Reis
wrote:
> On Mon, Nov 22, 2010 at 11:09:03AM -0500, David C Niemi wrote:
>> The general problem here is that the ondemand governor is aimed more at
>> power savings than perform
On Mon, Nov 22, 2010 at 11:09:03AM -0500, David C Niemi wrote:
> The general problem here is that the ondemand governor is aimed more at
> power savings than performance. In cases where the ondemand governor
> performs worse than the performance governor, the "sampling_down_factor"
> tunable is of
On Thursday 25 November 2010 13:05:49 Vishwanath Sripathy wrote:
> Thanks David.
> If I would like to fine tune up_threshold and sampling_down_factor for
> say OMAP platform, is there any way to do it in kernel itself?
> I know these are configurable via sysfs entries. But if I want to
> optimize t
Thanks David.
If I would like to fine tune up_threshold and sampling_down_factor for
say OMAP platform, is there any way to do it in kernel itself?
I know these are configurable via sysfs entries. But if I want to
optimize them in kernel itself, is there anyway? I see that default
values are set in
Thanks for running the tests, Vishwa. Your results are what I'd expect
but it's good to see independent confirmation. In my benchmarks I saw
95-100% of the performance governor's performance, but the conditions
were more favorable and the original ondemand governor was "only"
degrading performan
Amit,
On Tue, Nov 23, 2010 at 8:22 PM, Amit Kucheria wrote:
> Vishwa,
>
> Have you had a chance to do some usetime tests with these changes?
I did test USB performance with this and I see ondmeand is 90% close
to performance.
>
> It would be interesting to measure the power consumption with and
>
Vishwa,
Have you had a chance to do some usetime tests with these changes?
It would be interesting to measure the power consumption with and
without these changes.
/Amit
On Tue, Nov 23, 2010 at 5:59 PM, Vishwanath Sripathy
wrote:
> Thanks David for the inputs.
> I tried your patch. In addition
Thanks David for the inputs.
I tried your patch. In addition to that I reduced transition_latency.
With these 2 changes, I do see much better results (worst case
performance of ondemand is 88%).
Vishwa
On Mon, Nov 22, 2010 at 9:39 PM, David C Niemi wrote:
> The general problem here is that the
The general problem here is that the ondemand governor is aimed more at
power savings than performance. In cases where the ondemand governor
performs worse than the performance governor, the "sampling_down_factor"
tunable is often useful. I submitted the patch to add this tunable a
few weeks ago
Hi,
I was trying to investigate performance issues that we were seeing
with some usecases like Video playback on OMAP Platforms with ondemand
governor.
As part of this, I found a tool called cpufreq-bench
(http://lwn.net/Articles/339862) which can be used determine the
performance impact of ondema
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