Xref: utzoo comp.unix.wizards:6261 comp.arch:3240
Path: utzoo!mnetor!uunet!husc6!ut-sally!im4u!milano!ncr-sd!greg
From: greg@ncr-sd.SanDiego.NCR.COM (Greg Noel)
Newsgroups: comp.unix.wizards,comp.arch
Subject: Re: Jerry Pournelle on UNIX (From BYTE)
Message-ID: <1999@ncr-sd.SanDiego.NCR.COM>
Date: 21 Jan 88 00:18:59 GMT
References: <1495@osiris.UUCP> <2126@haddock.ISC.COM> <1497@osiris.UUCP>
Reply-To: greg@ncr-sd.SanDiego.NCR.COM (Greg Noel)
Organization: NCR Corporation, Rancho Bernardo
Lines: 17
Keywords: ROMable UNIX

In article <1410@sugar.UUCP> peter@sugar.UUCP (Peter da Silva) writes:
>The HP Integral handled this by copying the ROM to RAM at boot time, and
>keeping the file system in a RAM disk. It's also the first system I know of
>in which the RAM disk is allocated and freed as needed (the second is the
>Commodore Amiga).

Um, the read-only file system being discussed is over 500 megabytes; I doubt
that it will fit in the RAM of many home computers.

On the other hand, I could believe that interesting portions of it could be
read into RAM (like the directory tree) so that lookups would be fast; this
is one way to help alieviate the high seek time.

(I didn't know that RAM: was ever freed; I thought that only VD0: and VDK:
did that.....)
-- 
-- Greg Noel, NCR Rancho Bernardo   Greg.Noel@SanDiego.NCR.COM  or  greg@ncr-sd