From: Luke Lonergan <llonergan@greenplum.com>
To: Ron <rjpeace@earthlink.net>
To: pgsql-performance@postgresql.org
Subject: Re: Hardware/OS recommendations for large databases
Date: Sun, 27 Nov 2005 11:11:53 -0800
Message-ID: <BFAF44F9.14865%llonergan@greenplum.com> (raw)
In-Reply-To: <6.2.5.6.0.20051127114155.01dbf868@earthlink.net>
Ron,
On 11/27/05 9:10 AM, "Ron" <rjpeace@earthlink.net> wrote:
> Clever use of RAM can get a 5TB sequential scan down to ~17mins.
>
> Yes, it's a lot of data. But sequential scan times should be in the
> mins or low single digit hours, not days. Particularly if you use
> RAM to maximum advantage.
Unfortunately, RAM doesn't help with scanning from disk at all.
WRT using network interfaces to help - it's interesting, but I think what
you'd want to connect to is other machines with storage on them.
- Luke
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To: pgsql-performance@postgresql.org
Cc: llonergan@greenplum.com, rjpeace@earthlink.net
Subject: Re: Hardware/OS recommendations for large databases
In-Reply-To: <BFAF44F9.14865%llonergan@greenplum.com>
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