| From: | Greg Smith <gsmith(at)gregsmith(dot)com> |
|---|---|
| To: | Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> |
| Cc: | "Campbell, Lance" <lance(at)uiuc(dot)edu>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Backup causing poor performance - suggestions |
| Date: | 2008-05-05 20:11:27 |
| Message-ID: | Pine.GSO.4.64.0805051607160.28846@westnet.com |
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| Lists: | pgsql-performance |
On Mon, 5 May 2008, Scott Marlowe wrote:
> Other than that, you might wanna look at a faster / better RAID
> controller in the future. One with lots of battery backed cache set to
> write back.
Hopefully Lance's PERC 6/I SAS already has its battery installed. The 6/I
with 256MB of cache is decent enough that I'm not sure getting a better
controller would be a better investment than, say, adding more disks and
splitting the database I/O usefully among them.
Upgrading to PG 8.3 comes to mind as another option I'd consider before
getting desparate enough to add/swap controller cards, which is always a
scary thing on production servers.
--
* Greg Smith gsmith(at)gregsmith(dot)com http://www.gregsmith.com Baltimore, MD
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