Messages in this thread | | | From | Vincent Guittot <> | Date | Wed, 10 Oct 2018 14:34:32 +0200 | Subject | Re: [RFC PATCH 0/7] Introduce thermal pressure |
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Hi Juri,
On Wed, 10 Oct 2018 at 14:23, Juri Lelli <juri.lelli@gmail.com> wrote: > > 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?
Do you mean using a kind of scale_thermal_capacity in accumulate_sum when computing utilization ?
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