Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!uunet!seismo!vrdxhq!dgis!eplrx7!lad
From: lad@eplrx7.UUCP (Lawrence Dziegielewski)
Newsgroups: comp.sys.mac
Subject: Re: A/UX filesystem performance
Message-ID: <447@eplrx7.UUCP>
Date: Fri, 24-Jul-87 08:13:10 EDT
Article-I.D.: eplrx7.447
Posted: Fri Jul 24 08:13:10 1987
Date-Received: Sat, 25-Jul-87 18:12:09 EDT
References: <44025@beno.seismo.CSS.GOV> <10252@amdahl.amdahl.com> <1353@apple.UUCP>
Organization: E.I. DuPont Co. Engineering Physics Lab
Lines: 29
Summary: 4.3 for the II?

In article <1353@apple.UUCP>, rpd@apple.UUCP (Rick Daley) writes:
> NO! NO! NO!  A/UX does NOT run on top of the Mac OS.  It is a "real UNIX"
> and uses a "real UNIX" file system.  A/UX is based on System V.2 with

	Oh please.  Rick,  is there any chance a developer ( like myself )
	could get his hands on AU/X to explore the possibility of porting
	a 'Real Unix (bsd 4.3) to the II?  

>     2) The file system is System V style, not the Berkely "fast file system."
> I, for one, hope that the fast file system will be an option in future
> releases of A/UX, but it will not be so for the first release.  The fast file
> system yields better performance and supports long file names.

	Amen.  Implementing the FFS under AU/X would be a real plus. (no
	pun intended). 

> move the bytes itself.  This lack of DMA hardware means that disk I/O will
> always be a weak point of A/UX performance on a Mac II.

	How's about an ESDI disk interface for the II?



	lad@eplrx7
	(302) 695-1311


	"With every mistake,  we must surely be learning...."
						- George Harrison