lkml.org 
[lkml]   [2021]   [Jun]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subjectfind_new_ilb
Starting from the following commit:

commit 45da7a2b0af8fa29dff2e6ba8926322068350fce
Author: Peter Zijlstra <peterz@infradead.org>
Date: Tue Aug 18 10:48:17 2020 +0200

sched/fair: Exclude the current CPU from find_new_ilb()

up through Linux 5.12, I observed that often when most of the machine was
idle, there could be many (thousands) of sched_wake_idle_without_ipi
events, typically between cores 0 and 1. I don't see this any more in
Linux v5.13-rc1. I looked through the patches to fair.c and core.c
subsequent to v5.12, and I didn't see anything that explicitly addresses
this issue. Before I plunge into another set of rounds of bisecting, I
wonder if anyone knows whether and how this problem was resolved?

thanks,
julia

\
 
 \ /
  Last update: 2021-06-08 21:51    [W:0.054 / U:1.512 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site