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FreeBSD config

From: Dror Matalon <dror(at)zapatec(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: FreeBSD config
Date: 2004-02-26 18:03:45
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance

We have postgres running on freebsd 4.9 with 2 Gigs of memory. As per
repeated advice on the mailing lists we configured effective_cache_size
= 25520 which you get by doing `sysctl -n vfs.hibufspace` / 8192

Which results in using 200Megs for disk caching. 

Is there a reason not to increase the hibufspace beyond the 200 megs and
provide a bigger cache to postgres? I looked both on the postgres and
freebsd mailing lists and couldn't find a good answer to this.

If yes, any suggestions on what would be a good size on a 2 Gig machine?



Dror Matalon
Zapatec Inc 
1700 MLK Way
Berkeley, CA 94709


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