Date: Mon, 13 Oct 2008 00:54:20 -0400
From: Stephen Frost <sfrost@snowman.net>
To: Mikkel =?iso-8859-1?Q?H=F8gh?= <mikkel@hoegh.org>
Cc: pgsql-performance@postgresql.org, pgsql-general@postgresql.org
Subject: Re: [PERFORM] Drupal and PostgreSQL - performance issues?
Message-ID: <20081013045420.GD4452@tamriel.snowman.net>
Mail-Followup-To: Mikkel =?iso-8859-1?Q?H=F8gh?= <mikkel@hoegh.org>,
	pgsql-performance@postgresql.org, pgsql-general@postgresql.org
References: <2434A118-CEFA-43A9-BA88-006EC1F80326@hoegh.org>
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* Mikkel H=F8gh (mikkel@hoegh.org) wrote:
> I have been testing it a bit performance-wise, and the numbers are =20
> worrying. In my test, MySQL (using InnoDB) had a 40% lead in =20
> performance, but I'm unsure whether this is indicative for PostgreSQL =20
> performance in general or perhaps a misconfiguration on my part.

The comments left on your blog would probably be a good first step, if
you're not doing them already..  Connection pooling could definitely
help if you're not already doing it.  Drupal's MySQL-isms don't help
things either, of course.

Also, you don't post anything about the PostgreSQL config, nor the
hardware it's running on.  The default PostgreSQL config usually isn't
appropriate for decent hardware and that could be a contributing factor
here.  It would also be useful to make sure you've analyze'd your tables
and didn't just do a fresh load w/o any statistics having been gathered.

We run Drupal on PostgreSQL for an internal site and it works reasonably
well.  We havn't had any performance problems but it's not a terribly
large site either.  The issues we've had tend to come from PostgreSQL's
somewhat less-than-supported status with Drupal.

I've been meaning to look into Drupal's PG support to see about
improving it.  Perhaps this winter I'll get a chance to.

	Thanks,

		Stephen

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