From owner-freebsd-questions@FreeBSD.ORG Thu Feb 16 20:32:35 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org 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 536CF16A420 for ; Thu, 16 Feb 2006 20:32:35 +0000 (GMT) (envelope-from mike@ascendency.net) Received: from sccrmhc14.comcast.net (sccrmhc14.comcast.net [63.240.77.84]) by mx1.FreeBSD.org (Postfix) with ESMTP id D2F9443D46 for ; Thu, 16 Feb 2006 20:32:34 +0000 (GMT) (envelope-from mike@ascendency.net) Received: from eisenhower.ascendency.net ([67.173.128.145]) by comcast.net (sccrmhc14) with ESMTP id <2006021620323301400omshie>; Thu, 16 Feb 2006 20:32:33 +0000 Received: from Mike8500 (ipcop.localdomain [192.168.1.1]) (authenticated bits=0) by eisenhower.ascendency.net (8.13.4/8.13.4) with ESMTP id k1GKWW1d057558 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=NO); Thu, 16 Feb 2006 14:32:32 -0600 (CST) (envelope-from mike@ascendency.net) From: "Mike Loiterman" To: "'Wouter Spierenburg'" Date: Thu, 16 Feb 2006 14:32:29 -0600 Message-ID: <022a01c63338$1ba87d90$0401a8c0@Mike8500> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670 Thread-Index: AcYy0Imd98CUoPcmTrq31aJALVbMzAAABCWQAAF6GqAAAXgL0AADhoVwABMkugA= In-Reply-To: <200602161126.k1GBQoaH040934@smtp-vbr17.xs4all.nl> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.0.2 (eisenhower.ascendency.net [192.168.1.22]); Thu, 16 Feb 2006 14:32:32 -0600 (CST) Cc: freebsd-questions@freebsd.org Subject: RE: Mysterious reboot X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: mike@ascendency.net List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Feb 2006 20:32:35 -0000 Wouter Spierenburg wrote: > Try adding the following to /etc/sysctl.conf: > > kern.maxfiles=65535 > kern.maxfilesperproc=20000 > net.inet.tcp.delayed_ack=0 > net.inet.ip.maxfragpackets=10 > kern.ipc.somaxconn=2048 > > then 'cd' to /usr/src/sys/i386/conf > cp GENERIC SERVER > vi SERVER > > and add the following lines at the bottom of the file: > options TCPDEBUG > options RANDOM_IP_ID > options TCP_DROP_SYNFIN > options NMBCLUSTERS=65535 > options NMBUFS=40960 > > save the file, and follow these steps: > > /usr/sbin/config -g SERVER > cd ../../compile/SERVER > make depend > make > make install > #if all went well: > reboot > > The system will then come back up with tuned parameters, allowing more > in/outbound connections and better packethandling. Before I make these changes, I would like to just get a second opinion from the list about their value and what impact, if any, they might have on system stability, compatibility, etc. Wouter, please do not take offense to this! I sincerely appreciate your advice, but this is a production system, so I'm careful about what changes I make when I don't explicitly understand what is going on. I'm not familure with a few of those options. I also noticed that that you used the old (traditional) way of recompiling the kernel. Is that necessary or can I use the newer `make buildkernel KERNCONF=x && make installkernel KERNCONF=x'. I'm simply more comfortable with that way... Thanks to all ------------------------------ Mike Loiterman grantADLER Tel: 630-302-4944 Fax: 773-442-0992 Email: mike@ascendency.net PGP Key: 0xD1B9D18E