lkml.org 
[lkml]   [2020]   [Oct]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Why ping latency is smaller with shorter send interval?
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

\
 
 \ /
  Last update: 2020-10-02 11:57    [W:0.044 / U:0.620 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site