On Wed, 3 Feb 2016, Longepe, Philippe wrote:
> Hi Thomas,
>
> Thank you for sharing this test. I just did a quick test and yes this is
> really interesting !
>
> Without the scale option, the load is close to 100% for each cpus (so
> the pstates are increasing up to the turbo frequency) but with
> scale=320:208, the load is oscillating (close to 50% in average), so the
> requested frequencies are lower (the power is also reduced).
>
> I have a patch (not yet submitted) that reduce the gap for such a use
> case.
Hi,
may I ask you where this patch stays? I have seen nothing in Linus' tree,
that fixes that performance drop?
Thanks,
Thomas
Hi Thomas,
The patches which are improving ffmeg had to be tested for 2 months on android before submission.
That's why I resubmitted them very recently for review on our internal list.
They will be submitted them to the linux-pm list as soon as our internal review will be finished.
Srinivas, Rafael, did you get a chance to look at my patches (Perf/Power improvements for load-based algorithm) ?
In the meantime I'll do some additional tests with phoronix test suites.
Regards,
Philippe,
________________________________________
From: Thomas Voegtle [[email protected]]
Sent: Sunday, March 13, 2016 4:54 PM
To: Longepe, Philippe
Cc: [email protected]; Gasparini, Stephane; Wysocki, Rafael J
Subject: RE: Performance drop on Baytrail with 4.5-rc2
On Wed, 3 Feb 2016, Longepe, Philippe wrote:
> Hi Thomas,
>
> Thank you for sharing this test. I just did a quick test and yes this is
> really interesting !
>
> Without the scale option, the load is close to 100% for each cpus (so
> the pstates are increasing up to the turbo frequency) but with
> scale=320:208, the load is oscillating (close to 50% in average), so the
> requested frequencies are lower (the power is also reduced).
>
> I have a patch (not yet submitted) that reduce the gap for such a use
> case.
Hi,
may I ask you where this patch stays? I have seen nothing in Linus' tree,
that fixes that performance drop?
Thanks,
Thomas
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