lkml.org 
[lkml]   [2018]   [Oct]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC PATCH 0/7] Introduce thermal pressure
On 10/10/18 14:04, Vincent Guittot wrote:

[...]

> The problem was the same with RT, the cfs utilization was lower than
> reality because RT steals soem cycle to CFS
> So schedutil was selecting a lower frequency when cfs was running
> whereas the CPU was fully used.
> The same can happen with thermal:
> cap the max freq because of thermal
> the utilization with decrease.
> remove the cap
> the utilization is still low and you will select a low OPP because you
> don't take into account cycle stolen by thermal like with RT

What if we scale frequency component considering the capped temporary
max?

\
 
 \ /
  Last update: 2018-10-10 14:24    [W:0.069 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site