From owner-freebsd-stable Mon Dec 11 11:13: 3 2000 From owner-freebsd-stable@FreeBSD.ORG Mon Dec 11 11:12:59 2000 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from implode.root.com (root.com [209.102.106.178]) by hub.freebsd.org (Postfix) with ESMTP id 997D137B400; Mon, 11 Dec 2000 11:12:57 -0800 (PST) Received: from implode.root.com (localhost [127.0.0.1]) by implode.root.com (8.8.8/8.8.5) with ESMTP id LAA15637; Mon, 11 Dec 2000 11:08:57 -0800 (PST) Message-Id: <200012111908.LAA15637@implode.root.com> To: "O. Hartmann" Cc: freebsd-stable@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG Subject: Re: kernel option NBUF, what does ist means? In-reply-to: Your message of "Mon, 11 Dec 2000 10:49:03 +0100." From: David Greenman Reply-To: dg@root.com Date: Mon, 11 Dec 2000 11:08:57 -0800 Sender: dg@implode.root.com Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG >Dear Sirs. >For non kernel developer the additional options in LINT for kernel >configuration are little secrets and it is said, that some of them >could 'tweak' a standard kernel to be more powerful when getting >tweaked and the system it runs on is to be a server (I read some >articles about Linux vs. FreeBSD in a German magazine and it has been >mentioned that tweaking makes FreeBSD faster for serving purposes). > >One of the secret parameters seems to be NBUFS. it is set to 512 in >LINT, I set it to 4096 this time to see whats going on. Can anyone >offer me a hint on this parameter? Yes, you should not define it in your kernel config so that the system will properly auto-tune it to the best value based on your physical memory size. In fact most of the parameters found in LINT are that way - they are there to document that they exist, not to ecourage people to specify them. -DG David Greenman Co-founder, The FreeBSD Project - http://www.freebsd.org President, TeraSolutions, Inc. - http://www.terasolutions.com Pave the road of life with opportunities. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message