From owner-freebsd-hackers Thu Feb 1 09:29:48 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id JAA11921 for hackers-outgoing; Thu, 1 Feb 1996 09:29:48 -0800 (PST) Received: from tfs.com (tfs.com [140.145.250.1]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id JAA11916 for ; Thu, 1 Feb 1996 09:29:43 -0800 (PST) Received: from critter.tfs.com by tfs.com (smail3.1.28.1) with SMTP id m0ti2o1-0003x3C; Thu, 1 Feb 96 09:28 PST Received: from localhost.tfs.com (localhost.tfs.com [127.0.0.1]) by critter.tfs.com (8.6.12/8.6.12) with SMTP id SAA09821; Thu, 1 Feb 1996 18:28:23 +0100 X-Authentication-Warning: critter.tfs.com: Host localhost.tfs.com didn't use HELO protocol To: "Andrew V. Stesin" cc: toor@dyson.iquest.net (John S. Dyson), hackers@freebsd.org Subject: Re: Good news -- pipe stuff In-reply-to: Your message of "Thu, 01 Feb 1996 17:57:28 +0200." <199602011557.RAA17767@office.elvisti.kiev.ua> Date: Thu, 01 Feb 1996 18:28:21 +0100 Message-ID: <9819.823195701@critter.tfs.com> From: Poul-Henning Kamp Sender: owner-hackers@freebsd.org Precedence: bulk > Hello John, > > # Rules of thumb like 2x or 3x kind-of don't really model what is happening. > # A better model would be "sum up the size of all of the programs that you > # are running (including malloc areas, etc)". If that is bigger 2X the > # amount of memory that you are using, then that is how much swap space you > # need, otherwise 2X memory is a good bet. > > Who can say apriory what programs and how many of them > you'll be running tomorrow? Today your'e Ok, tomorrow > you suddenly get some 15 sendmails running on the queue, > and several uuxqts, and so on, so on. > Well, be generous then :-) I have always used my own private fudge-factor: 1) No less than 32M, ever. 2) 5-10 % of the disk capacity. My laptop has 48M swap for instance. -- Poul-Henning Kamp | phk@FreeBSD.ORG FreeBSD Core-team. http://www.freebsd.org/~phk | phk@login.dknet.dk Private mailbox. whois: [PHK] | phk@ref.tfs.com TRW Financial Systems, Inc. Future will arrive by its own means, progress not so.