| From: | "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com> |
|---|---|
| To: | "Thomas Spreng" <spreng(at)socket(dot)ch> |
| Cc: | "Christopher Browne" <cbbrowne(at)acm(dot)org>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Oddly slow queries |
| Date: | 2008-04-22 15:25:42 |
| Message-ID: | dcc563d10804220825j592cb3fdtf0d977dcf4e51312@mail.gmail.com |
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| Lists: | pgsql-performance |
On Tue, Apr 22, 2008 at 7:42 AM, Thomas Spreng <spreng(at)socket(dot)ch> wrote:
>
> I think I'll upgrade PostgreSQL to the latest 8.3 version in the next
> few days anyway, along with a memory upgrade (from 1.5GB to 4GB) and a
> new 2x RAID-1 (instead of RAID-5) disk configuration. I hope that this
> has already a noticeable impact on the performance.
Note that if you have a good RAID controller with battery backed cache
and write back enabled, then you're probably better or / at least as
well off using four disks in a RAID-10 than two separate RAID-1 sets
(one for xlog and one for data).
Test to see. I've had better performance in general with the RAID-10 setup.
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