From: Bill Moran <wmoran@collaborativefusion.com>
To: Ireneusz Pluta <ipluta@wp.pl>
Cc: pgsql-performance@postgresql.org
Subject: Re: DB cluster sharing between 32 and 64 bit software versions
Date: Thu, 31 May 2007 09:36:37 -0400
Message-ID: <20070531093637.6c536dca.wmoran@collaborativefusion.com> (raw)
In-Reply-To: <465ECBE4.9020600@wp.pl>
References: <465ECBE4.9020600@wp.pl>
In response to Ireneusz Pluta <ipluta@wp.pl>:
> Hello,
>
> I am going to build a new PostgreSQL dedicated server, on FreeBSD. Before it goes to production
> service I need to make some tests and take configuration decisions, focused on my application needs.
> Usual thing. One of them is selection of one of 32 or 64 bit versions of both OS and PG. What I am
> going to do is to install both versions on different filesystems of the same machine. As a
> consequence I would also have to deal with two independent copies of my real databases on which I
> want to perfrom my tests. However, the databases are rather large, so I am thinking about
> possibilities of not to have to restore two copies of my data, but use just one instead, and sharing
> it between the 32 and 64 versions, across reboots.
>
> Would that scenario work, or I am simply too naive considering it?
It won't work, unfortunately. The on-disk representation of the data is
different between ia32 and amd64.
--
Bill Moran
Collaborative Fusion Inc.
http://people.collaborativefusion.com/~wmoran/
wmoran@collaborativefusion.com
Phone: 412-422-3463x4023
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To: pgsql-performance@postgresql.org
Cc: wmoran@collaborativefusion.com, ipluta@wp.pl
Subject: Re: DB cluster sharing between 32 and 64 bit software versions
In-Reply-To: <20070531093637.6c536dca.wmoran@collaborativefusion.com>
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