Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!rutgers!apple!desnoyer
From: desnoyer@Apple.COM (Peter Desnoyers)
Newsgroups: comp.protocols.appletalk
Subject: Re: Ethernet vs LocalTalk
Message-ID: <30159@apple.Apple.COM>
Date: 5 May 89 16:11:06 GMT
References: <29980@apple.Apple.COM> <278@suna.CMI.COM> <24837@ames.arc.nasa.gov> <30125@apple.Apple.COM>
Distribution: comp.protocols.appletalk
Organization: Apple Computer Inc, Cupertino, CA
Lines: 19

In article <30125@apple.Apple.COM> dyson@Apple.COM (Patrick Dyson) writes:
>
> > Misc os-bashing stuff deleted
>
>Appletalk gets about 3.4 mbit performance cpu-to-cpu over Ethernet using
>generic mac software and the ATP protocol (guaranted delivery, 2k chunks).
>
>TCP implementations that I have seen for the mac II get slightly slower    
>performance, but present more of a stream. UDP would be fairer.
>

A MacTCP person sent me a message yesterday mentioning, among other
things, that they had gotten 3.3 mbit performance memory-to-memory.
Both numbers are rather respectable - 2mbit used to be a good
performance figure on a VAX. [The similarity between performance
figures is no doubt more than a coincidence. The same factors limit
performance in both cases.]

				Peter Desnoyers