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From: gwyn@brl-smoke.ARPA (Doug Gwyn )
Newsgroups: comp.arch,comp.unix.wizards,comp.os.minix
Subject: Re: Free Software Foundation (was: Re: Mach, the new standard?)
Message-ID: <6476@brl-smoke.ARPA>
Date: Sat, 26-Sep-87 23:35:33 EDT
Article-I.D.: brl-smok.6476
Posted: Sat Sep 26 23:35:33 1987
Date-Received: Sun, 27-Sep-87 11:59:28 EDT
References: <1665@ncr-sd.SanDiego.NCR.COM> <8381@utzoo.UUCP> <797@Pescadero.ARPA> <7320@felix.UUCP> <838@usfvax2.UUCP> <7672@felix.UUCP>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 5
Xref: mnetor comp.arch:2385 comp.unix.wizards:4528 comp.os.minix:1731

In article <7672@felix.UUCP> preston@felix.UUCP (Preston Bannister) writes:
>The fork call is going to be awefully expensive, as a copy of the
>entire data space of the parent will be made.

It need not be; don't copy the pages until a attempt to modify them occurs.