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From: "John S. Dyson" <toor@dyson.iquest.net>
Message-Id: <199703121526.KAA07316@dyson.iquest.net>
Subject: Re: maxvnodes with news server?
To: scrappy@hub.org (Marc G. Fournier)
Date: Wed, 12 Mar 1997 10:26:09 -0500 (EST)
Cc: questions@freebsd.org
In-Reply-To: <Pine.NEB.3.95.970312015322.16322F-100000@hub.org> from "Marc G. Fournier" at Mar 12, 97 01:55:16 am
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> 
> Hi...
> 
> 	Someone mentioned setting maxvnodes to between 15000-30000
> on a news server, depending on the size of the file system(?), but 
> I never heard anything back on how to determine a reasonable value...
> 
> 	Can someone explain what increasing maxvnodes does, and what
> a reasonable value to use is?
> 
> 
The primary effect (that would be normally seen)
is to improve directory caching.   The cost is approx 700-1000 bytes
per vnode.  It can make a tremendous difference in certain cases.

John