From owner-freebsd-hackers Wed Jul 14 0:30:15 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from herring.nlsystems.com (nlsys.demon.co.uk [158.152.125.33]) by hub.freebsd.org (Postfix) with ESMTP id 4BF8C1538C for ; Wed, 14 Jul 1999 00:30:11 -0700 (PDT) (envelope-from dfr@nlsystems.com) Received: from salmon.nlsystems.com (salmon.nlsystems.com [10.0.0.3]) by herring.nlsystems.com (8.9.3/8.8.8) with ESMTP id IAA36673; Wed, 14 Jul 1999 08:31:07 +0100 (BST) (envelope-from dfr@nlsystems.com) Date: Wed, 14 Jul 1999 08:31:07 +0100 (BST) From: Doug Rabson To: Jon Ribbens Cc: Alfred Perlstein , "Daniel C. Sobral" , freebsd-hackers@freebsd.org, tech-userlevel@netbsd.org, tech@openbsd.org Subject: Re: Replacement for grep(1) (part 2) In-Reply-To: <19990713100228.C10979@oaktree.co.uk> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tue, 13 Jul 1999, Jon Ribbens wrote: > Alfred Perlstein wrote: > > You're browsing with netscape and It hits about 32megs in size, > > you click on a multimedia object and netscape execs a helper app. > > vfork() > > > you also have to consider a program wishing to make sparse use > > of its address space, without overcommit it becomes impossible. > > So Don't Do That Then. Overcommit can be used for many reasons. I use it to reserve a large linear address space to mmap alpha i/o spaces to which allows an efficient implementation of inx/outx in user mode: UID PID PPID CPU PRI NI VSZ RSS WCHAN STAT TT TIME COMMAND 0 43655 43652 7 2 0 12616584 12456 select S ?? 1036:41.62 /usr/X11R6/bin/X -auth /usr/X11R6/lib/X11/xdm/authdir/A:0-w43652 The X server is using 12G of address space.. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message