spoting the I/O hog

To: netbsd-users%netbsd.org@localhost
Subject: spoting the I/O hog
From: manu%netbsd.org@localhost (Emmanuel Dreyfus)
Date: Fri, 3 Apr 2009 08:07:24 +0200

Hello

I have the machine that sometime get crushed under I/O. for some reason,
an ipop3d process starts writing a lot:
- systat io shows both components of a RAID 1 being 100% busy.
- killing all ipop3d fixes restores I/O to normal.

Apart from killing the processes one by one (there are many), is there a
way to discover which process is the I/O hog? 

-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu%netbsd.org@localhost

Follow-Ups:
- Re: spoting the I/O hog
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- Re: spoting the I/O hog
  - From: Manuel Bouyer

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