Re: Upgraded to 8.2.3 --- still having performance issues

Carlos Moreno skrev:
> The system does very frequent insertions and updates --- the longest
> table has, perhaps, some 20 million rows, and it's indexed (the primary
> key is the combination of two integer fields). This longest table only
> has inserts (and much less frequent selects), at a peak rate of maybe
> one or a few insertions per second.

One or a few inserts per second doesn't sound like that much. I would
have expected it to work. If you can you might want to group several
inserts into a single transaction.

A standard hint is also to move the WAL onto its own disk. Or get a disk
controller with battery backed up ram.

But it's hard to say from your description what the bottleneck is and
thus hard to give any advice.

> Any help/tips/guidance in troubleshooting this issue? It will be
> much appreciated!

You could try to find specific queries that are slow. Pg can for example
log queries for you that run for longer than X seconds.

/Dennis