From: Benjamin Herrenschmidt <benh@kernel•crashing.org>
To: Dan Malek <dan@embeddedalley•com>
Cc: linuxppc-dev@ozlabs•org, "Brian D. Carlstrom" <bdc@carlstrom•com>
Subject: Re: Load average 1.0 on idle machine
Date: Mon, 15 May 2006 16:23:27 +1000 [thread overview]
Message-ID: <1147674207.21291.101.camel@localhost.localdomain> (raw)
In-Reply-To: <D0930F4F-DF46-47FF-B33C-0BE313CC81DB@embeddedalley.com>
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
prev parent reply other threads:[~2006-05-15 6:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-13 22:56 Load average 1.0 on idle machine Juergen Kreileder
2006-05-13 23:44 ` Benjamin Herrenschmidt
2006-05-14 7:16 ` Brian D. Carlstrom
2006-05-15 1:45 ` Benjamin Herrenschmidt
2006-05-15 6:08 ` Dan Malek
2006-05-15 6:23 ` Benjamin Herrenschmidt [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1147674207.21291.101.camel@localhost.localdomain \
--to=benh@kernel$(echo .)crashing.org \
--cc=bdc@carlstrom$(echo .)com \
--cc=dan@embeddedalley$(echo .)com \
--cc=linuxppc-dev@ozlabs$(echo .)org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox