From: Luke Lonergan <llonergan@greenplum.com>
To: Mark Kirkwood <markir@paradise.net.nz>
To: Merlin Moncure <merlin.moncure@rcsonline.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Hardware/OS recommendations for large databases (
Date: Mon, 28 Nov 2005 14:05:15 -0800
Message-ID: <BFB0BF1B.1495C%llonergan@greenplum.com> (raw)
In-Reply-To: <438B7A8A.4020505@paradise.net.nz>
Mark,
On 11/28/05 1:45 PM, "Mark Kirkwood" <markir@paradise.net.nz> wrote:
>>> 8.0 : 32 s
>>> 8.1 : 25 s
A 22% reduction.
select count(1) on 12,900MB = 1617125 pages fully cached:
MPP based on 8.0 : 6.06s
MPP based on 8.1 : 4.45s
A 26% reduction.
I'll take it!
I am looking to back-port Tom's pre-8.2 changes and test again, maybe
tonight.
- Luke
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To: pgsql-performance@postgresql.org
Cc: llonergan@greenplum.com, markir@paradise.net.nz, merlin.moncure@rcsonline.com
Subject: Re: Hardware/OS recommendations for large databases (
In-Reply-To: <BFB0BF1B.1495C%llonergan@greenplum.com>
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