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Date: Sun, 21 Nov 2004 17:00:29 +0100
From: Hanspeter Roth <hampi@rootshell.be>
To: freebsd-questions@freebsd.org
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	David Jenkins <david.jenkins@gmail.com>
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	<9395922d04112106002061980d@mail.gmail.com>
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cc: David Jenkins <david.jenkins@gmail.com>
Subject: Re: Tracing Disk Activity
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  On Nov 21 at 14:00, David Jenkins spoke:

> On Sun, 21 Nov 2004 10:33:47 +0100, Hanspeter Roth <hampi@rootshell.be> wrote:
> > Hello,
> > 
> > I have set an idle timeout for the hard-disk. But when there is no
> > user activity there are frequent disk accesses.
> > How can one trace disk access?
> > I'd like to know the kind of access and on which files/directories/
> > nodes. I'd like to log on the console or on a memory disk file.
> 
> There may be a much better way of doing this but have a look at fstat(1).

Fstat(1) seems to take snapshots only and doesn't show # of bytes
transfered. Using fstat by polling frequently misses programs run
between poll.

I'd like a tool that displays in real-time (similar to tcpdump).

-Hanspeter