From owner-freebsd-questions@FreeBSD.ORG Tue Feb 28 15:13:18 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 6C51E16A422 for ; Tue, 28 Feb 2006 15:13:18 +0000 (GMT) (envelope-from freebsd-questions@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id 305AE43D58 for ; Tue, 28 Feb 2006 15:12:58 +0000 (GMT) (envelope-from freebsd-questions@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1FE6W0-0007o6-RK for freebsd-questions@freebsd.org; Tue, 28 Feb 2006 16:11:56 +0100 Received: from blueice4n1.de.ibm.com ([195.212.29.187]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 28 Feb 2006 16:11:52 +0100 Received: from element by blueice4n1.de.ibm.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 28 Feb 2006 16:11:52 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-questions@freebsd.org From: Pavel Duda Date: Tue, 28 Feb 2006 16:10:38 +0100 Lines: 33 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: blueice4n1.de.ibm.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041103 Thunderbird/0.9 Mnenhy/0.6.0.104 X-Accept-Language: en-us, en Sender: news Subject: FreeBSD 5.4 & 6.0 slow network throughput 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: Tue, 28 Feb 2006 15:13:18 -0000 I have upgraded my home "server" to 5.4 from 5.2.1 and after some time I've noticed that network throughput is very low (about 4MB/s). I'm not expert on this field but I have checked some settings (sysctl, netstat) and couldn't find anything suspicious. I have second machine with almost same configuration so I tried to put there newer version of FreeBSD 6.0 but it doesn't help. Now I've tried older version - 4.11 (only one I have available at this moment on CD) and speed is as it is supposed to be (8-9MB/s). Does somebody has same experience with such behaviour ? I've used "clean" systems ie. without kernel modifications and I don't know what could cause this (some major change in TCP stack in 5.4+ ? NIC drivers ?). Test system: P4, 1.8Ghz, 512MB RAM with Intel EtherExpress 100 & Realtek Gigabit NIC (fxp & rl) FBSD 5.4/6.0: - avarage net thrput 3.5 - 4.5 MB/s (tested with FTP/Samba) - netperf reports about 31-34 mbit/s with default settings FBSD 4.11: - avarage net thrput 7.5 - 9 MB/s - netperf reports about 65-66 mbit/s Testing was done over 100mbit linksys switch, 1Gbit USR switch, crosslink cable. Four different machines used as "clients". Thanks for any advice Pavel