Date: Tue, 25 Oct 2011 21:46:01 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Stefan Bethke" <stb@lassitu.de>, <freebsd-hackers@freebsd.org> Subject: Re: iotop (dtrace?) Message-ID: <D0ABAB73434C40F29011BAA3087D7184@multiplay.co.uk> References: <EEC47FD8-63E0-4F7E-8994-CCEC720C2C5B@lassitu.de>
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top and then use the IO mode, will give you an idea where the issue is.
Regards
Steve
----- Original Message -----
From: "Stefan Bethke" <stb@lassitu.de>
To: <freebsd-hackers@freebsd.org>
Sent: Tuesday, October 25, 2011 9:34 PM
Subject: iotop (dtrace?)
I've got two systems with a constantly high rate of disk I/O that sometimes seems to be overwhelmed from it. Before trying to
decide if a hardware upgrade will help, I'd like to figure out which processes generate the load.
I've found a couple scripts named iotop which appear to produce what I would be interested in, but they appear to require Solaris
or Linux.
Has someone ported over one of them, or would have a suggestion how to go about writing a custom dtrace script to gather this kind
of information?
I can successfully run a couple of sample dtrace scripts on these 8-stable amd64 boxes.
Thanks,
Stefan
Solaris dtrace-based iotop: http://prefetch.net/articles/solaris.dtracetopten.html
Linux /proc-based Python script: http://guichaz.free.fr/iotop/
--
Stefan Bethke <stb@lassitu.de> Fon +49 151 14070811
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