Re: SSDs with Postgresql?

From: Florian Weimer <fweimer(at)bfk(dot)de>
To: Michael Nolan <htfoot(at)gmail(dot)com>
Cc: Greg Smith <greg(at)2ndquadrant(dot)com>, pgsql-general(at)postgresql(dot)org
Subject: Re: SSDs with Postgresql?
Date: 2011-04-28 13:08:29
Message-ID: 82sjt2a5gy.fsf@mid.bfk.de
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* Michael Nolan:

> If you archive your WAL files, wouldn't that give you a pretty good
> indication of write activity?

WAL archiving may increase WAL traffic considerably, I think. Fresh
table contents (after CREATE TABLE or TRUNCATE) is written to the log
if WAL archiving is active. This would have a significant performance
impact on some of our loads.

--
Florian Weimer <fweimer(at)bfk(dot)de>
BFK edv-consulting GmbH http://www.bfk.de/
Kriegsstraße 100 tel: +49-721-96201-1
D-76133 Karlsruhe fax: +49-721-96201-99

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