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)

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On Wed, 2010-10-20 at 15:30 +0200, Peter Zijlstra wrote:

Ah, I just remembered Venki recently poked at this code too, maybe he's
got a bright idea..

Venki, there are cpu-load issues, the reported issue is that idle load
is too high, and I think I can see that happening with the current code
(due to 74f5187ac8).

The flaw I can see in that commit is that we can go idle multiple times
during the LOAD_FREQ window, which will basically inflate the idle
contribution.

All attempts from me to fix that so far have resulted in curious
results..

Would you have a moment to also look at this?
--
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Messages in current thread:
Re: High CPU load when machine is idle (related to PROBLEM ..., Peter Zijlstra, (Wed Oct 20, 6:43 am)
Re: High CPU load when machine is idle (related to PROBLEM ..., Venkatesh Pallipadi, (Thu Oct 21, 10:18 am)
[No subject], Venkatesh Pallipadi, (Fri Oct 22, 2:03 pm)
Re: High CPU load when machine is idle (related to PROBLEM ..., Venkatesh Pallipadi, (Fri Oct 22, 4:03 pm)
Re: High CPU load when machine is idle (related to PROBLEM ..., Venkatesh Pallipadi, (Mon Oct 25, 9:29 am)
Re: High CPU load when machine is idle (related to PROBLEM ..., Valdis.Kletnieks, (Sun Nov 28, 11:07 am)
[tip:sched/urgent] sched: Cure more NO_HZ load average woes, tip-bot for Peter Zi ..., (Wed Dec 8, 1:40 pm)