| From: | Craig Ringer <craig(at)postnewspapers(dot)com(dot)au> |
|---|---|
| To: | Lothar Bongartz <lotharbongartz(at)hotmail(dot)com> |
| Cc: | pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: BUG #5395: UPDATE on shutdown overwrites table |
| Date: | 2010-03-31 02:28:42 |
| Message-ID: | 4BB2B35A.4080804@postnewspapers.com.au |
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| Thread: | |
| Lists: | pgsql-bugs |
On 30/03/2010 11:27 PM, Lothar Bongartz wrote:
> For this reason the database is stalling from time to time and I have to
> restart the server.
Are those stalls accompanied by any mention of checkpoints in the logs?
The default PostgreSQL configuration isn't tuned for larger workloads -
it's very minimalist. You probably need to increase your
checkpoint_segments . It may also be a good idea to look at shared_buffers .
Before just re-starting the server, you should look at `iostat',
`vmstat', `top', `iotop' or other suitable performance monitoring tools
and see if the server's actually DOING anything. You'll probably find
it's busy with disk I/O and not really stalled at all.
--
Craig Ringer
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