Date: Mon, 26 Jun 1995 10:19:57 -0500 (CDT) From: Joe Greco <jgreco@brasil.moneng.mei.com> To: hsu@cs.hut.fi (Heikki Suonsivu) Cc: davidg@root.com, hackers@freebsd.org Subject: Re: FreeBSD as a router Message-ID: <199506261519.KAA29341@brasil.moneng.mei.com> In-Reply-To: <199506250512.IAA07090@shadows.cs.hut.fi> from "Heikki Suonsivu" at Jun 25, 95 08:12:34 am
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> routing solution. ...and like I said, despite the hipe, I found pc-route to be
> rather aweful in terms of performance (I was using it with a 386 at the time).
>
> Not if one is trying to find a cheap router for a SLIP/PPP line. A PCroute
> in a 8088 at 4.77Mhz did 38.4k with 16450's, but FreeBSD in a 80386 at
> 16MHz fails to keep up with 16550's at the same speed. It could be a
> tuning problem, though, I haven't had time to try earlier trigger for UARTS
> or larger serial buffers.
Say WHAT?
I used to have a 386SX/16 here in the office with a SMC Ethernet card and
^^
a bunch of 16550's, that I used as a terminal server (recently upgraded to a
386DX/16). It handles 4 modems, a high speed (38400) network connection
to another box, and from time to time when I am loading FreeBSD, I connect
another 386sx/16 with 16450's, and set up a hardwire SLIP link between the
two at 115200.
I typically see about 5000cps on the SLIP link between the two, and am
fairly certain it's the machine with 16450's that's limiting the throughput.
So I know of at least one 386sx/16 that can soak up 38.4k with 16*4*50's,
and my router was certainly capable of blasting lots of data all over the
place at speeds rather higher than that....
... Joe
-------------------------------------------------------------------------------
Joe Greco - Systems Administrator jgreco@ns.sol.net
Solaria Public Access UNIX - Milwaukee, WI 414/342-4847
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