Re: Drupal and PostgreSQL - performance issues?

On Tue, Oct 14, 2008 at 12:39 PM, Mikkel Høgh <mikkel@hoegh.org> wrote:
> On 14/10/2008, at 20.23, Daniel Verite wrote:
>>
>> What I've noticed on drupal-6.4 with Ubuntu 8.04 is that the default
>> postgresql.conf has:
>> ssl=true
>> and since drupal doesn't allow connecting to pgsql with unix socket paths
>> [1], what you get by default is probably TCP + SSL encryption.
>> A crude test that just connects and disconnect to a local pg server
>> appears to me to be 18 times faster when SSL is off.
>> So you might want to check if setting ssl to false makes a difference for
>> your test.
>
> Ouch, there's a gotcha. So enabling SSL gives you SSL connections by
> default, even for localhost? That's… unexpected.
>
>> [1] A patch has been posted here: http://drupal.org/node/26836 , but it
>> seems to have gotten nowhere. The comments about pg_connect() are
>> depressingly lame, apparently nobody had a clue how unix socket files should
>> be specified, including the contributor of the patch!
>
> Well, I suppose no one thought about looking at a specific path instead of
> just the default location. That's what we do for MySQL as well. I suppose
> that is a bit silly, but that, too, is going away in Drupal 7 (and I won't
> miss it). It will do the Drupal project a lot of good not having to maintain
> its own database abstraction system.
>
> I'm going to run the test again without SSL to see how much difference it
> does. Thanks for the tip.

Also, look at setting up memcached.  It makes a world of difference.