| From: | Michael Adler <adler(at)pobox(dot)com> |
|---|---|
| To: | John Allgood <john(at)turbocorp(dot)com> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Peformance Tuning Opterons/ Hard Disk Layout |
| Date: | 2005-02-23 19:50:59 |
| Message-ID: | 20050223195059.GA5334@pobox.com |
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| Lists: | pgsql-performance |
On Wed, Feb 23, 2005 at 02:15:52PM -0500, John Allgood wrote:
> using custom scripts. Maybe I have given a better explanation of the
> application. my biggest concern is how to partition the shared storage
> for maximum performance. Is there a real benifit to having more that one
> raid5 partition or am I wasting my time.
I think the simplest and most generic solution would be to put the OS
and pg_xlog on a RAID 1 pair and dedicate the rest of the drives to
RAID 5 or RAID 1+0 (striped set of mirrors) array.
Depending on the nature of your work, you may get better performance
by placing individual tables/indices on dedicated spindles for
parallel access.
-Mike Adler
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