On 2021-08-25 17:31, Honnappa Nagarahalli wrote:
<snip>
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.
CFS is the Linux best-effort scheduler and default scheduling policy,
and likely used by most DPDK applications.
