Path: utzoo!attcan!uunet!lll-winken!ames!cincsac.arc.nasa.gov!medin
From: medin@cincsac.arc.nasa.gov (Milo S. Medin)
Newsgroups: comp.protocols.appletalk
Subject: Re: Ethernet vs LocalTalk
Message-ID: <24837@ames.arc.nasa.gov>
Date: 2 May 89 19:44:01 GMT
References: <29980@apple.Apple.COM> <278@suna.CMI.COM>
Sender: usenet@ames.arc.nasa.gov
Lines: 21

In article <29980@apple.Apple.COM>, desnoyer@Apple.COM (Peter Desnoyers) writes:
> From: desnoyer@Apple.COM (Peter Desnoyers)
> Subject: Re: Ethernet vs LocalTalk
>. . . 
> Van Jacobson at Lawrence Berkeley Labs has gotten ~9Mbit performance
> from an experimental version of TCP/IP (with full checksumming) on Sun
> 3/50s and 3/60s.  (about MacII speed processors) With enough
> optimization AppleTalk should be able to do this, as well.  
> 
> 				Peter Desnoyers

Wait a sec.  Van got those figures running on a real OS (BSD Unix)
on properly designed hardware (SUN 3 + Lance chip).  There is *NO
WAY* you are going to come close with the lousy ethernet controllers
you get on the MAC-II, and I doubt the Nu-bus can properly
deal with the transfer rate.  One thing that Van has definitely
shown is that CPU is not the real problem, it's braindead I/O
devices!  If you expect real performance, use a real computer.

					Thanks,
					    Milo