From owner-freebsd-performance@FreeBSD.ORG Thu Jul 17 03:52:54 2003 Return-Path: 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 565F037B401 for ; Thu, 17 Jul 2003 03:52:54 -0700 (PDT) Received: from spf13.us4.outblaze.com (205-158-62-67.outblaze.com [205.158.62.67]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8888443FBF for ; Thu, 17 Jul 2003 03:52:53 -0700 (PDT) (envelope-from jwest254@mail.com) Received: from 205-158-62-68.outblaze.com (205-158-62-68.outblaze.com [205.158.62.68]) by spf13.us4.outblaze.com (Postfix) with QMQP id 7BE5F1821519 for ; Thu, 17 Jul 2003 10:52:53 +0000 (GMT) Received: (qmail 88174 invoked from network); 17 Jul 2003 10:52:53 -0000 Received: from unknown (HELO ws1-8.us4.outblaze.com) (205.158.62.59) by 205-158-62-153.outblaze.com with SMTP; 17 Jul 2003 10:52:53 -0000 Received: (qmail 3633 invoked by uid 1001); 17 Jul 2003 10:52:52 -0000 Message-ID: <20030717105252.3632.qmail@mail.com> Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Content-Transfer-Encoding: 7bit MIME-Version: 1.0 X-Mailer: MIME-tools 5.41 (Entity 5.404) Received: from [193.120.103.96] by ws1-8.us4.outblaze.com with http for jwest254@mail.com; Thu, 17 Jul 2003 05:52:52 -0500 From: "James West" To: "Terry Lambert" Date: Thu, 17 Jul 2003 05:52:52 -0500 X-Originating-Ip: 193.120.103.96 X-Originating-Server: ws1-8.us4.outblaze.com cc: freebsd-performance@freebsd.org Subject: Re: Major problem with "No buffer space available" errors X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Jul 2003 10:52:54 -0000 > So the questions to answer are: > > 1) Are you using a lot of ICMP (e.g. ping, traceroute, RIP, etc.)? The box is almost idle - there's definitely no pings going on, and no traceroutes either, also no RIP. Could this be caused by a flood of some sort? (like a DoS attack?) > > 2) Are you using a lot of UDP (e.g. Linux NFS clients using UDP > mounts and an rsize or wsize larger than the MTU would permit > to fit in a single UDP packet)? No, not udp - the only UDP traffic that'd be going on with the box is DNS. The box runs qmail, apache, ssh and that's it. Nothing else - no other ports are open on the machine other than ones for these services, everything else is locked down (syslog's not listening on a network port, mysql isn't etc. etc.). -- __________________________________________________________ Sign-up for your own FREE Personalized E-mail at Mail.com http://www.mail.com/?sr=signup CareerBuilder.com has over 400,000 jobs. Be smarter about your job search http://corp.mail.com/careers