From: jerome lacoste <jerome.lacoste@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: 50% CPU user usage but top doesn't list any CPU unfriendly task
Date: Mon, 3 Jan 2005 22:46:40 +0100 [thread overview]
Message-ID: <5a2cf1f6050103134611114dbd@mail.gmail.com> (raw)
Hi,
on a fairly old box used as a desktop (PII 300 Mhz with 196M RAM), I
observe the following strange behavior which I believe comes from the
kernel.
There's a VoIP known 'P2P' closed source application running, an IP
tables based firewall and a remote ssh session initiated. When using
top, sorting by CPU usage, no program is using more than a couple of
percent of CPU. On the other side, the total CPU user time is at
around 40%, with a 1.5 load average. Memory looks OK. The machine is
responsive as usual.
So I wonder why the cpu user time is at 40% without any particular
program showing as using CPU in the top listing. 'Problem' was
reproducible with 2.4.x and now with 2.6.8.1.
So it this a real problem or is there something that I don't
understand in particular? Thanks for the insight.
Jerome
next reply other threads:[~2005-01-03 21:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-03 21:46 jerome lacoste [this message]
2005-01-04 7:51 ` 50% CPU user usage but top doesn't list any CPU unfriendly task Norbert van Nobelen
2005-01-04 10:43 ` jerome lacoste
2005-01-05 11:16 ` Toon van der Pas
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=5a2cf1f6050103134611114dbd@mail.gmail.com \
--to=jerome.lacoste@gmail.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
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