Re: [PATCH] sched/fair: schedutil: update only with all info available

[Vincent Guittot]

On 11 April 2018 at 18:15, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> On Wed, Apr 11, 2018 at 06:10:47PM +0200, Vincent Guittot wrote:
>> > Could is be that for some reason the nohz balancer now takes a very long
>> > time to run?
>>
>> Heiner mentions that is was a relatively slow celeron and he uses
>> ondemand governor. So I was about to ask him to use performance
>> governor to see if it can be because cpu runs slow and takes too muche
>> time to enter idle
>
> Maybe also hand him a patch with some trace_printk()s in and ask him to
> send /debug/tracing/trace after it happens or somesuch. Maybe we can
> find a clue that way.

yes