Re: Performance increase with elevator=deadline

From: Greg Smith <gsmith(at)gregsmith(dot)com>
To: Craig Ringer <craig(at)postnewspapers(dot)com(dot)au>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Performance increase with elevator=deadline
Date: 2008-04-11 19:56:36
Message-ID: Pine.GSO.4.64.0804111553410.21193@westnet.com
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On Sat, 12 Apr 2008, Craig Ringer wrote:

> Speaking of I/O performance with PostgreSQL, has anybody here done any
> testing to compare results with LVM to results with the same filesystem on a
> conventionally partitioned or raw volume?

There was some chatter on this topic last year; a quick search finds

http://archives.postgresql.org/pgsql-performance/2007-06/msg00005.php

which is a fair statement of the situation. I don't recall any specific
benchmarks.

--
* Greg Smith gsmith(at)gregsmith(dot)com http://www.gregsmith.com Baltimore, MD

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