From owner-freebsd-performance@FreeBSD.ORG Sat Mar 18 12:08:30 2006 Return-Path: X-Original-To: freebsd-performance@freebsd.org Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B55A116A400 for ; Sat, 18 Mar 2006 12:08:30 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from pi.codefab.com (pi.codefab.com [199.103.21.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id AF87643D6E for ; Sat, 18 Mar 2006 12:08:26 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from localhost (localhost [127.0.0.1]) by pi.codefab.com (Postfix) with ESMTP id EBF7F5EFD; Sat, 18 Mar 2006 07:08:25 -0500 (EST) Received: from pi.codefab.com ([127.0.0.1]) by localhost (pi.codefab.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 27094-02; Sat, 18 Mar 2006 07:08:25 -0500 (EST) Received: from [192.168.1.3] (pool-68-160-194-11.ny325.east.verizon.net [68.160.194.11]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by pi.codefab.com (Postfix) with ESMTP id D69EE5C3C; Sat, 18 Mar 2006 07:08:24 -0500 (EST) Message-ID: <441BF838.1080600@mac.com> Date: Sat, 18 Mar 2006 07:08:24 -0500 From: Chuck Swiger Organization: The Courts of Chaos User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: OxY References: <000a01c64a81$45eb6850$0201a8c0@oxy> In-Reply-To: <000a01c64a81$45eb6850$0201a8c0@oxy> X-Enigmail-Version: 0.94.0.0 Content-Type: text/plain; charset=ISO-8859-2 Content-Transfer-Encoding: 7bit X-Virus-Scanned: amavisd-new at codefab.com Cc: freebsd-performance@freebsd.org Subject: Re: packet drop with intel gigabit / marwell gigabit X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 18 Mar 2006 12:08:30 -0000 OxY wrote: > hi! > > i had the packet drop problem with the marwell yukon gigabitcard: > (system is an amd 2000+xp, 512mb ram, fbsd 6.0-p5) Hi-- The changes you've made in tuning the sysctls are unreasonable on a machine with only 512 MB of RAM; in particular: > net.inet.tcp.inflight.max=10737254400 ...you don't have 10GB of space for TCP!?! Remove all of the tuning you've done and start over with the default values, and then adjust those gradually if doing so improves your situation. > when the apache ran, with no http, just used to share files and the traffic was > 2-2,5MB/S i had 14-17% packet drop on the gigabit interface.. > with the sysctl i succesfully pulled it down to 12-14%, but it was terrible, > so i bought an intel pro/1000 gt. > with this i have 3-6% drop with same traffic load on the other interface.. > when i stop the apache packet drop falls down to 0-0.1%, which is great. > but with apache it's terrible.. Um. What are you measuring? If you start or stop Apache, that should make no difference to ICMP ping testing, for example.... -- -Chuck