Re: Fwd: FreeBSD, PostgreSQL, semwait and sbwait!

Darcy Buskermolen wrote:

>----------  Forwarded Message  ----------
>
>Subject: FreeBSD, PostgreSQL, semwait and sbwait!
>Date: March 23, 2004 12:02 pm
>From: "Jason Coene" <jcoene@gotfrag.com>
>To: <freebsd-performance@freebsd.org>
>
>Hello all,
>
>We're having a substantial problem with our FreeBSD 5.2 database server
>running PostgreSQL - it's getting a lot of traffic (figure about 3,000
>queries per second), but queries are slow, and it's seemingly waiting on
>other things than CPU time
>
>
Could this be a 5.2 performance issue ?

In spite of certain areas where the 5.x series performance is known to
be much better than 4.x (e.g networking), this may not be manifested in
practice for a complete application.
(e.g. I am still running 4.9 as it outperformed 5.1 vastly for a ~100
database sessions running queries - note that I have not tried out 5.2,
so am happy to be corrected on this)

regards

Mark