lkml.org 
[lkml]   [2017]   [Jul]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH RFC v4] cpufreq: schedutil: Make iowait boost more energy efficient
On Wed, Jul 12, 2017 at 10:30:35AM +0530, Viresh Kumar wrote:
> On 11-07-17, 07:14, Joel Fernandes wrote:

> > Another approach than setting min in sugov_set_iowait_boost, is, since
> > we have already retrieved the current util, we can check if flags ==
> > SCHED_CPUFREQ_IOWAIT, then set initial the iowait_boost such that
> > (iowait_boost / iowait_boost_max) is aleast equal to (util / max) or
> > iowait_boost_min, which ever is lower.
>
> So my concerns weren't only about the initial min value, but also that you
> reduce the freq from sugov_set_iowait_boost(). We can discuss what the ideal
> value to start with can be.

I'm not sure I see that. He only mucks with iowait_boost, not the actual
frequency afaict.

And sugov_iowait_boost() picks the highest of util vs iowait_boost,
which wasn't changed.

Or am I completely missing something? (that code is a bit hard to
follow)

\
 
 \ /
  Last update: 2017-07-12 11:37    [W:0.111 / U:0.108 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site