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> > On 2021-08-24 23:30, Stephen Hemminger wrote: > > On Tue, 24 Aug 2021 20:03:03 +0000 > > Honnappa Nagarahalli <honnappa.nagaraha...@arm.com> wrote: > > > >>> One difference between this implementation and the previous one is > >>> this busy loop. rte_pause() relaxes the cpu, but will not make the > >>> calling thread to sleep and wait for the sync event. So here we can > >>> spin a quite long time until the other thread is scheduled by the OS. > >> Yes, this is a difference. We could add a microsleep to allow for the OS to > un-schedule the current thread. > > > > Why not use sched_yield() here? > > > > The man page is not exactly encouraging the use sched_yield on CFS. Sorry, what is CFS? There are already several uses of sched_yield in the code.
