On Fri, Oct 02, 2020 at 11:26:00AM +0200, Eric Dumazet wrote: > 2) Idle cpus can be put in a power conserving state. > It takes time to exit from these states, as you noticed. > These delays can typically be around 50 usec, or more.
This is often the case in my experience. I'm even used to starting a busy loop in SCHED_IDLE prio on certain machines or in certain VMs just to keep them busy, and to see the ping latency cut in half. Willy
