*BSD News Article 31168


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From: flipk@iastate.edu (Phil Knaack)
Newsgroups: comp.unix.bsd
Subject: Re: How many users could a SLIP/PPP support?
Date: 31 May 94 21:12:05 GMT
Organization: Iowa State University, Ames, Iowa
Lines: 26
Message-ID: <flipk.770418725@las1.iastate.edu>
References: <2sfslb$htb@deathstar.cris.com>
NNTP-Posting-Host: las1.iastate.edu

In <2sfslb$htb@deathstar.cris.com> Pan@deathstar.cris.com (Pan) writes:
>How many simultaneous users could a single 14.4K SLIP/PPP connection support 
>before serious performance degradation? Any first hand experiences?

At my apartment we are running a 14.4 SLIP connection with four NetBSD
boxes, with three of us in the apartment. This serves us very well for
the regular TCP stuff and very limited Xwindows apps (like emacs,
zephyr), but should one of us start ftp'ing or if sendmail kicks in a
TCP transfer, the line becomes exceedingly lagged. But of course this is
due to the way SLIP queues up packets in the kernel that the priorities
of TCP over UDP don't work well. I suspect PPP handles that better, but
I've never tried it.

In any case, three of us are pretty happy on a 14.4 connection.

>thanks
>John Fricker
>Jefferson FreeNet
>pan@cris.com 

Cheers,
Phil
-- 
Phil Knaack                  flipk@iastate.edu       flipk@cs.iastate.edu
1304 Florida Apt #3          flipk@blade.vorpal.com  flipk@vorpal.com
Ames IA 50014           " .. it wasn't me, honest!"