On Wed, Jan 20, 2016 at 06:21:07PM +0100, Frederic Weisbecker wrote: > You mean a periodic call to the above from the housekeepers? > > I didn't think about doing that because you nacked that approach with > scheduler_tick(). This isn't much different.
This does _one_ thing, namely load accounting. scheduler_tick() does a whole bunch of things, some which really do not make much sense to do remotely. > It means the housekeeper is entirely dedicated to full dynticks CPUs. Depends on how many there are, and how many housekeepers. I would suggest one housekeeper cpu per node or so to make sure this keeps working. Then again, these load values aren't super important, esp. not for the nohz_full case where you typically don't care about load balancing.
