From owner-freebsd-questions@FreeBSD.ORG Wed May 19 07:26:30 2004 Return-Path: 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 C1A2216A4CE for ; Wed, 19 May 2004 07:26:30 -0700 (PDT) Received: from movnet.org (as8-6-3.lan.s.bonet.se [217.215.71.94]) by mx1.FreeBSD.org (Postfix) with ESMTP id 14C0A43D2D for ; Wed, 19 May 2004 07:26:30 -0700 (PDT) (envelope-from mlist@movnet.org) Received: from localhost ([127.0.0.1] helo=movnet.org) by movnet.org with esmtp (Exim 4.34; FreeBSD) id 1BQS1Z-000Anz-Nb for freebsd-questions@freebsd.org; Wed, 19 May 2004 16:26:25 +0200 Received: (from mlist@localhost) by movnet.org (8.12.10/8.12.10/Submit) id i4JEQP7T041538 for freebsd-questions@freebsd.org; Wed, 19 May 2004 16:26:25 +0200 (CEST) (envelope-from mlist) Date: Wed, 19 May 2004 16:26:25 +0200 From: David To: freebsd-questions@freebsd.org Message-ID: <20040519142625.GA41509@movnet.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename="q-01.freebsd" User-Agent: Mutt/1.4.2.1i Subject: Total freezeup under network load X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 May 2004 14:26:30 -0000 Hello, I've encountered a problem with FreeBSD. When I upload files to my FTP server (pure-ftpd v1.0.18) on the LAN I get speeds around 3MB/s. Then, suddenly and at totally random times, the transfer stops. If I'm connected to the server's IRCd I ping timeout. The server totally freezes for a period of 5-10 seconds or so. I've tried using two different clients, both give me this result. Even if there's a problem with the FTPd, the OS/network shouldn't freeze up totally. The computer in question has a VIA 533MHz board, with an on-board NIC. I tried asking for help on IRC (#freebsdhelp on EFnet), but it seemed like no one had ever encountered this problem before. An op told me to look into dummynet. I guess enabling dummynet in the kernel could aid me, but I still think that it's strange that FreeBSD locks up after a random period of time, after being under a network load. I would really appreciate help on this. Thanks. /David