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From: Greg Smith <greg@2ndquadrant.com>
To: grant@amadensor.com
Cc: pgsql-performance@postgresql.org
Subject: Re: Fun little performance IMPROVEMENT...
Date: Fri, 21 Jan 2011 15:19:21 -0500
Message-ID: <4D39EA49.5040809@2ndquadrant.com> (raw)
In-Reply-To: <fb95011e666ffd6528d0b57542d7097f.squirrel@grant.boldlygoingnowhere.org>
References: <fb95011e666ffd6528d0b57542d7097f.squirrel@grant.boldlygoingnowhere.org>

grant@amadensor.com wrote:
> This was on a 4 CPU Xen virtual machine running
> 8.1.22 on CENTOS.
>   

You're not going to get anyone to spend a minute trying to figure what's 
happening on virtual hardware with an ancient version of PostgreSQL.  If 
this was an actual full test case against PostgreSQL 8.4 or later on a 
physical machine, it might be possible to draw some conclusions about it 
that impact current PostgreSQL development.  Note where 8.1 is on 
http://wiki.postgresql.org/wiki/PostgreSQL_Release_Support_Policy for 
example.

-- 
Greg Smith   2ndQuadrant US    greg@2ndQuadrant.com   Baltimore, MD
PostgreSQL Training, Services, and 24x7 Support  www.2ndQuadrant.us
"PostgreSQL 9.0 High Performance": http://www.2ndQuadrant.com/books




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