Load average 1.0 on idle machine

Benjamin Herrenschmidt benh at kernel.crashing.org
Mon May 15 16:23:27 EST 2006


On Mon, 2006-05-15 at 02:08 -0400, Dan Malek wrote:
> On May 14, 2006, at 9:45 PM, Benjamin Herrenschmidt wrote:
> 
> > ....   For now, consider
> > the load avergage value bogus :)
> 
> It's not bogus :-)  If you happen to schedule periodic
> tasks that are sampled with load average computes,
> or sleep them "uninterrupible", they are counted in
> the load average.

The thermal control runs every second and sleeps with "interruptible"...
so it should not have such a laod average imho :) Now it's possible that
what it does during that "second" is long enough to end up not sleeping
that much (though it's also sleeping while doing i2c accesses, but that
is uninterruptible for obvious reasons at the i2c driver level).

Ben




More information about the Linuxppc-dev mailing list