Re: High CPU load when machine is idle (related to PROBLEM: Unusually high load average when idle in 2.6.35, 2.6.35.1 and later)

Damien Wyart
2010-11-25T13:40:08Z

Hi Peter,

Do you have a plan about solving this problem in the coming weeks or
will it still be present in 2.6.37 final? I am not implying any critic
in any way, just want to know a status because compared to other bugs
discussed in lkml, this one has seen very little technical proposals
towards a resolution (except your attempts). People who signed off the
discussed commit did not make any technical analysis about the bug
reported and this gives a strange feeling. Earth will not stop rotating
if it is not solved, but I still this it is quite important and affects
many users.

> [74f5187ac873042f502227701ed1727e7c5fbfa9] sched: Cure load average vs> NO_HZ woes

> We've gone through two kernel releases with this commit, and I think
> I'm understandably curious why it's not been reverted if it's causing
> problems with no solution in sight.

Even with this commit reverted, the load is incorrect in NO_HZ mode, so
revert only is not enough.

--
Damien Wyart