From owner-freebsd-questions Thu Jan 23 12:41:21 2003 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 16ABD37B401 for ; Thu, 23 Jan 2003 12:41:20 -0800 (PST) Received: from p1.ns777.net (p1.ns777.net [216.40.247.3]) by mx1.FreeBSD.org (Postfix) with SMTP id 436A543F5B for ; Thu, 23 Jan 2003 12:41:14 -0800 (PST) (envelope-from craig@2400baud.com) Received: (qmail 29427 invoked by uid 2526); 23 Jan 2003 20:41:08 -0000 Received: from 12.158.17.30 ( [12.158.17.30]) as user craig@localhost by webmail.2400baud.com with HTTP; Thu, 23 Jan 2003 15:41:08 -0500 Message-ID: <1043354468.3e305364aafdc@webmail.2400baud.com> Date: Thu, 23 Jan 2003 15:41:08 -0500 From: craig@2400baud.com To: freebsd-questions@freebsd.org Subject: NMBCLUSTERS and Kernel config MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit User-Agent: Internet Messaging Program (IMP) 3.1 X-Originating-IP: 12.158.17.30 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG All, Im getting ready to go with our FreeBSD production mail server and Ive been reading that to optimize network mbufs, specify the NMBCLUSTERS options in the kernel. Ive read that setting this to a quarter of your physical RAM on this is the way to go, or devising a number from a mathematical equation based upon your maximum number of connections at peak (meaning, 800 connections at peak equals an NMBCLUSTER of 25600, or mathimatical breakdown 800 connections X 32K per session = 25600KB) Does anyone have a good way to devise a number for this, or is it really even needed? Ive a GB of memory in a Compaq DL320. The FreeBSD handbook says typically this is set to 1024 - 4096, adding to my confusion of what I need to set this to, if anything. Thanks in advance for any insight, Craig ------------------------------------------------- This mail sent through IMP: http://horde.org/imp/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message