Path: utzoo!utgpu!water!watmath!clyde!att-cb!att-ih!pacbell!ames!ucsd!sdcsvax!ucsdhub!hp-sdd!hplabs!hpda!hpcupt1!hpisod2!decot
From: decot@hpisod2.HP.COM (Dave Decot)
Newsgroups: comp.sys.hp
Subject: Re: HP825 math 15x SLOWER than 825
Message-ID: <16710007@hpisod2.HP.COM>
Date: 31 Mar 88 04:20:12 GMT
References: <830004@bgphp1.UUCP>
Organization: Hewlett Packard, Cupertino
Lines: 18

Shankar Unni writes:
> ...  The s300/s800 version of HP-UX has an essentially sysV file system
> with BSD extensions, and keeping track of industry standard features
> like NFS was a simple matter of taking Sun's code and making relatively
> minor modifications to fit it into HP-UX.  For the s500, it would have
> been an implement-from-scratch affair.

A slight correction to forestall more misconceptions...

Both the Series 300 and Series 800 use a BSD-based (McKusick-style) file
system (indeed, most of the kernel is BSD with bug fixes), but the
interface above it is compatible with System V (although many BSD features
are also present).  Clearly, if we had used the System V file system
code, NFS and other networking products such as ARPA/BSD services would
have been much harder to port.

Dave Decot
hpda!decot