On Wed, Jun 26, 2019 at 06:55:36PM +0000, Raslan, KarimAllah wrote: > If the host is completely in no_full_hz mode and the pCPU is dedicated to a > single vCPU/task (and the guest is 100% CPU bound and never exits), you would > still be ticking in the host once every second for housekeeping, right? Would > not updating the mwait-time once a second be enough here? People are trying very hard to get rid of that remnant tick. Lets not add dependencies to it. IMO this is a really stupid issue, 100% time is correct if the guest does idle in pinned vcpu mode.
