| From: | "Joost Kraaijeveld" <J(dot)Kraaijeveld(at)Askesis(dot)nl> |
|---|---|
| To: | "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com> |
| Cc: | "Pgsql-Performance (E-mail)" <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: Can anyone explain this pgbench results? |
| Date: | 2006-03-07 19:49:30 |
| Message-ID: | A3D1526C98B7C1409A687E0943EAC410605FC8@obelix.askesis.nl |
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| Lists: | pgsql-performance |
Jim C. Nasby wrote:
> Speaking of 'disks', what's your exact layout? Do you have a 5 drive
> raid5 for the OS and the database, 1 drive for swap and 1 drive for
> pg_xlog?
On a Sil SATA 3114 controller:
/dev/sda OS + Swap
/dev/sdb /var with pg_xlog
On the 3Ware 9500S-8, 5 disk array:
/dev/sdc with the database (and very safe, my MP3 collection ;-))
As I wrote in one of my posts to Michael, I suspect that the card is not handling the amount of write operations as well as I expected. I wonder if anyone else sees the same characteristics with this kind of card.
Groeten,
Joost Kraaijeveld
Askesis B.V.
Molukkenstraat 14
6524NB Nijmegen
tel: 024-3888063 / 06-51855277
fax: 024-3608416
e-mail: J(dot)Kraaijeveld(at)Askesis(dot)nl
web: www.askesis.nl
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