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Date: Wed, 19 Jan 2005 19:19:43 -0800
From: Kris Kennaway <kris@obsecurity.org>
To: Bartosz Fabianowski <freebsd@chillt.de>
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cc: freebsd-stable@freebsd.org
Subject: Re: Persisting troubles with periodic stalls every few minutes
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On Thu, Jan 20, 2005 at 02:36:30AM +0100, Bartosz Fabianowski wrote:

> When everything is working normally, the CPU is at:
> 15% system    30% user    65% idle
>=20
> At the first screen update after a stall, the CPU is at:
> 15% system    85% user     0% idle
>=20
> Also, the VM statistics such as "zfod" and "ofod" have jumped from their=
=20
> usual zero level to several thousand. And disk activity is reported as=20
> high, of course. A couple seconds after the stall is over, all=20
> statistics return to their normal values.
>=20
> So, some user process is misbehaving. And has been doing so ever since=20
> this box was set up. Plus, it is somehow disk related and happens no=20
> matter what I am running or not, what I am doing or not.
>=20
> Any ideas on how to debug this? How can I find the guilty process?

Try top, ps, systat, etc.

Kris

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