From owner-freebsd-questions  Tue Feb 25 19:10:06 1997
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Date: Tue, 25 Feb 1997 19:09:10 -0800 (PST)
From: Doug White <dwhite@gdi.uoregon.edu>
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Reply-To: Doug White <dwhite@resnet.uoregon.edu>
To: spork <spork@super-g.com>
cc: Petri Helenius <pete@sms.fi>, freebsd-questions@FreeBSD.ORG
Subject: Re: socket buffers
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On Tue, 25 Feb 1997, spork wrote:

> On a slightly unrelated note, I have a 2.1.7 machine running erpcd for 4
> Xylogics Remote Annexes.  After installing their latest software
> (R3.1/R11.2) I see that now it is using TCP rather than UDP, which is
> fine with me, I guess, but ever since that, a netstat -m shows 66% of
> mbufs used, which seems rather high.  Right now that is the only thing
> this box is doing, but later this week, it will be a mail hub, primary
> DNS, a POP server, and doing some light NFS exports.  I fear that that
> number reported in netstat -m will go high enough to cause trouble...

I would just try it.  It really depends on how much mbuf re-use you get.
On my workstation, I have 42% in use, and that's doing basically nothing
for most of the day.

> What is the recommended way of increasing mbufs, and what is a good
> starting point?  Are there any other variables that should change as well?

When things break it it gets up to 95% or so, then I would consider it :) 

I'm not the mbuf pro though, you might try asking hackers@freebsd.org.

Doug White                              | University of Oregon  
Internet:  dwhite@resnet.uoregon.edu    | Residence Networking Assistant
http://gladstone.uoregon.edu/~dwhite    | Computer Science Major