From owner-freebsd-questions@FreeBSD.ORG Mon Sep 18 03:55:32 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 BEB6416A47E for ; Mon, 18 Sep 2006 03:55:32 +0000 (UTC) (envelope-from jim@centerfuse.net) Received: from mail.contexthosting.net (mail.contexthosting.net [209.120.245.124]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0313A43D5E for ; Mon, 18 Sep 2006 03:55:18 +0000 (GMT) (envelope-from jim@centerfuse.net) Received: from localhost (localhost [127.0.0.1]) by mail.contexthosting.net (Postfix) with ESMTP id 816AE958BD for ; Sun, 17 Sep 2006 23:55:21 -0400 (EDT) Received: from mail.contexthosting.net ([209.120.245.124]) by localhost (firefly.contexthosting.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 11305-06 for ; Sun, 17 Sep 2006 23:55:21 -0400 (EDT) Received: from [192.168.1.100] (c-68-38-110-38.hsd1.pa.comcast.net [68.38.110.38]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.contexthosting.net (Postfix) with ESMTP id 49C48958AE for ; Sun, 17 Sep 2006 23:55:21 -0400 (EDT) Message-ID: <450E1896.9090906@centerfuse.net> Date: Sun, 17 Sep 2006 23:55:02 -0400 From: Jim Keller User-Agent: Thunderbird 1.5.0.7 (Windows/20060909) MIME-Version: 1.0 To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: amavisd-new at contexthosting.net Subject: Heavy internal network traffic seems to upset other network processes X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Sep 2006 03:55:32 -0000 I have a FreeBSD 6.1 machine with two em nics, one of which is set up as external for the Internet-facing side, the other is internal (100Mbit) and is connected to a small switch with a few other machines. Occasionally I will transfer large files across the internal link and, when doing so, other network related applications seem to grind to a halt and the system seems to be working very hard. In fact, mySQL will actually stop accepting incoming requests during the file transfer, which is the biggest side effect I'm having because of the problem. I'm wondering if it's some kind of tuning option I need to set, but I'm really not sure where to look. I have maxusers set to 256, nmbclusters is 8192 (maybe this should be higher?). Any help would be appreciated. Thanks. -Jim keller