| From: | Mike Bresnahan <mike(dot)bresnahan(at)bestbuy(dot)com> |
|---|---|
| To: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Amazon EC2 CPU Utilization |
| Date: | 2010-01-27 23:15:45 |
| Message-ID: | loom.20100128T001411-480@post.gmane.org |
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| Lists: | pgsql-bugs pgsql-general |
John R Pierce <pierce <at> hogranch.com> writes:
> more likely, he's disk IO bound, but hard to say as that iostat output
> only showed a couple 2 second slices of work. the first output, which
> shows average since system startup, seems to show the system has had
> relatively high average wait times of 100ms on the average, yet the
> samples below only show 0, 2, 3mS await.
I don't think the problem is disk I/O. The database easily fits in the available
RAM (in fact there is a ton of RAM free) and iostat does not show a heavy load.
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