RE: Performance drop on Baytrail with 4.5-rc2

From	Thomas Voegtle <tv@lio96.de>
Newsgroups	linux.kernel
Subject	RE: Performance drop on Baytrail with 4.5-rc2
Date	2016-03-13 17:10 +0100
Message-ID	<rcgKC-81N-5@gated-at.bofh.it> (permalink)
References	<qXtqr-8iB-39@gated-at.bofh.it> <qYbhM-67g-11@gated-at.bofh.it> <qYbhM-67g-13@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

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

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

RE: Performance drop on Baytrail with 4.5-rc2 Thomas Voegtle <tv@lio96.de> - 2016-03-13 17:10 +0100
  RE: Performance drop on Baytrail with 4.5-rc2 "Longepe, Philippe" <philippe.longepe@intel.com> - 2016-03-15 10:00 +0100

csiph-web