Horton

Re: [HACKERS] Slow count(*) again...

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Mladen Gogala <mladen.gogala@vmsinfo.com>
Cc: Kevin Grittner <Kevin.Grittner@wicourts.gov>, Maciek Sakrejda <msakrejda@truviso.com>, "sthomas@peak6.com" <sthomas@peak6.com>, "pgsql-performance@postgresql.org" <pgsql-performance@postgresql.org>
Date: 2011-02-04T01:36:32Z
Lists: pgsql-hackers, pgsql-performance 
On Thu, Feb 3, 2011 at 7:39 PM, Mladen Gogala <mladen.gogala@vmsinfo.com> wrote:
>  reality. As a matter of fact, Oracle RDBMS on the same machine will
> regularly beat PgSQL in performance.
>  That has been my experience so far.   I even posted counting query results.

It sure is, but those count queries didn't run faster because of query
planner hints.  They ran faster because of things like index-only
scans, fast full index scans, asynchronous I/O, and parallel query.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company