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.
