SUMMARY: iowait

From: Jarkko Airaksinen <JAiraksinen_at_zed.com>
Date: Mon Mar 19 2007 - 17:02:27 EDT
Hello,

Well, I found the process that was causing the iowait but I couldn't find the
type of iowait it caused. We had plenty of disk I/O available, there wasn't
that much paging going on etc.

Anyway, with psio (http://www.brendangregg.com) I could find the process that
was using the most I/O in the system. It was an Oracle process where one of
the data loads was a 10-line "insert into database1 as select lot of fields
from database2", so the communication between the two databases (both on the
same server) was too heavy to run.

-j-


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Received on Mon Mar 19 16:06:44 2007

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