| From: | "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com> |
|---|---|
| To: | Ian Westmacott <ianw(at)intellivid(dot)com> |
| Cc: | Ron <rjpeace(at)earthlink(dot)net>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: improving write performance for logging |
| Date: | 2006-01-06 01:08:22 |
| Message-ID: | 20060106010822.GK43311@pervasive.com |
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| Thread: | |
| Lists: | pgsql-performance |
On Wed, Jan 04, 2006 at 11:00:38AM -0500, Ian Westmacott wrote:
> The WAL is a 2-spindle (SATA) RAID0 with its own controller (ext3).
> The tables are on a 10-spindle (SCSI) RAID50 with dual U320
> controllers (XFS). This is overkill for writing and querying the data,
> but we need to constantly ANALYZE and VACUUM in the
> background without interrupting the inserts (the app is 24x7). The
> databases are 4TB, so these operations can be lengthy.
How come you're using RAID50 instead of just RAID0? Or was WAL being on
RAID0 a typo?
--
Jim C. Nasby, Sr. Engineering Consultant jnasby(at)pervasive(dot)com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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