| From: | Richard Huxton <dev(at)archonet(dot)com> |
|---|---|
| To: | Chris Cheston <ccheston(at)gmail(dot)com> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: postgres 7.4 at 100% |
| Date: | 2004-06-25 09:09:51 |
| Message-ID: | 40DBEBDF.3090605@archonet.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
Chris Cheston wrote:
> Hi all,
>
> I was running Postgres 7.3 and it was running at about 15% with my
> application. On Postgres 7.4 on another box, it was running at 100%...
People are going to need more information. Are you talking about
CPU/disk IO/memory?
> My settings are default on both boxes I think.
Doubtful - PG crawls with the default settings. Check your old
postgresql.conf file and compare. Also, read the tuning article at:
http://www.varlena.com/varlena/GeneralBits/Tidbits/index.php
> There are only about 20 inserts per second, which is really low.
> Anyone have any ideas as to something I have to do to Postgres 7.4 to
> change it from the default so that it's not eating up all my CPU? I
> have no clue how to debug this...
What does top/vmstat/iostat show during heavy usage?
> Help please!!!! Should I downgrade to 7.3 to see what happens? BTW
> I'm running Postgres 7.3.2 on:
>
> Linux box 2.4.25-040218 #1 SMP Wed Feb 18 17:59:29 CET 2004 i686 i686
> i386 GNU/Linux
>
> on a single processor P4 1.4GHz, 512 MB RAM. Does the SMP kernel do
> something with the single processor CPU? or should this not affect
> psql?
Don't know about the SMP thing. Unlikely that one of the big
distributions would mess that up much though.
--
Richard Huxton
Archonet Ltd
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