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spoting the I/O hog


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

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