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)

Peter Zijlstra
2010-11-30T17:29:18Z

On Tue, 2010-11-30 at 17:53 +0100, Damien Wyart wrote:
> * Peter Zijlstra <peterz@infradead.org> [101130 15:59]:
> > OK, so here's a less crufty patch that gets the same result on my
> > machine, load drops down to 0.00 after a while.
>
> Seems OK too here.
>
> > It seems a bit slower to reach 0.00, but that could be because
> > I actually changed the load computation for NO_HZ=n as well, I added
> > a rounding factor in calc_load(), we no longer truncate the division.
>
> Yes, really feels slower, but in the two configurations as you write.
> Then this is a matter of convention, do not know which version is more
> "correct" or "natural", but this is coherent in the two modes (HZ and
> NO_HZ).
>
> Do you plan to push this one to upstream/stable, or do you plan further
> modifications?

No this is about it, I've written a bit more comments, and I'll need to
come up with a changelog, I'll also wait for Kyle's testers to come
back, but yes, then I'll push it upstream/stable.