From: Benjamin Arai <barai@cs.ucr.edu>
To: pgsql-performance@postgresql.org
Subject: Re: 3WARE Card performance boost?
Date: Wed, 18 Jan 2006 10:26:37 -0800
Message-ID: <011201c61c5c$b81cc520$d7cc178a@uni> (raw)
In-Reply-To: <00ee01c61c5a$5db2c870$d7cc178a@uni>
My original plan was to buy a 3WARE card and put a 1GB of memory on it to
improve writes but I am not sure if that is actually going to help the issue
if fsync=off.
Benjamin Arai
barai@cs.ucr.edu
http://www.benjaminarai.com <http://www.benjaminarai.com/;
_____
From: pgsql-performance-owner@postgresql.org
[mailto:pgsql-performance-owner@postgresql.org] On Behalf Of Benjamin Arai
Sent: Wednesday, January 18, 2006 10:10 AM
To: pgsql-performance@postgresql.org
Subject: [PERFORM] 3WARE Card performance boost?
Hi,
I am currently doing large weekly updates with fsync=off. My updates
involves SELECT, UPDATE, DELETE and etc. Setting fsync=off works for me
since I take a complete backup before the weekly update and run a "sync" and
"CHECKPOINT" after each weekly update has completed to ensure the data is
all written to disk.
Obviously, I have done this to improve write performance for the update each
week. My question is if I install a 3ware or similar card to replace my
current software RAID 1 configuration, am I going to see a very large
improvement? If so, what would be a ball park figure?
Benjamin Arai
barai@cs.ucr.edu
http://www.benjaminarai.com <http://www.benjaminarai.com/;
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: barai@cs.ucr.edu
Subject: Re: 3WARE Card performance boost?
In-Reply-To: <011201c61c5c$b81cc520$d7cc178a@uni>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox