Re: [HACKERS] []performance issues

Count() is slow even on your Sun server with 16gb ram?  How big is the
database?

David Blood
-----Original Message-----
From: pgsql-general-owner@postgresql.org
[mailto:pgsql-general-owner@postgresql.org] On Behalf Of Andrew Sullivan
Sent: Friday, August 02, 2002 9:40 AM
To: PostgreSQL-development
Cc: PostgreSQL general list
Subject: Re: [GENERAL] [HACKERS] []performance issues

On Fri, Aug 02, 2002 at 03:48:39PM +0400, Yaroslav Dmitriev wrote:
>
> So I am still interested in PostgreSQL's ability to deal with
> multimillon records tables.

[x-posted and Reply-To: to -general; this isn't a development
problem.]

We have tables with multimillion records, and they are fast.  But not
fast to count().  The MVCC design of PostgreSQL will give you very
few concurerncy problems, but you pay for that in the response time
of certain kinds of aggregates, which cannot use an index.

A

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Andrew Sullivan                               87 Mowat Avenue
Liberty RMS                           Toronto, Ontario Canada
<andrew@libertyrms.info>                              M6K 3E3
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