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

[Peter Zijlstra]

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.