From owner-freebsd-performance@FreeBSD.ORG Mon Sep 18 18:46:57 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 4C86A16A53F; Mon, 18 Sep 2006 18:46:57 +0000 (UTC) (envelope-from ingom-list@freenet.de) Received: from mout2.freenet.de (mout2.freenet.de [194.97.50.155]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1BEC043DF8; Mon, 18 Sep 2006 18:46:15 +0000 (GMT) (envelope-from ingom-list@freenet.de) Received: from [194.97.50.135] (helo=mx2.freenet.de) by mout2.freenet.de with esmtpa (Exim 4.62) (envelope-from ) id 1GPO7T-0005fJ-AG; Mon, 18 Sep 2006 20:45:27 +0200 Received: from p54b19737.dip0.t-ipconnect.de ([84.177.151.55] helo=medion-8800) by mx2.freenet.de with esmtpa (ID ingom-list@freenet.de) (Exim 4.62 #12) id 1GPO7S-0000TN-Vd; Mon, 18 Sep 2006 20:45:27 +0200 Date: Mon, 18 Sep 2006 20:45:23 +0200 To: "Robert Watson" From: Ingo Content-Type: text/plain; format=flowed; delsp=yes; charset=utf-8 MIME-Version: 1.0 References: <20060918145122.W1253@fledge.watson.org> Content-Transfer-Encoding: 8bit Message-ID: In-Reply-To: <20060918145122.W1253@fledge.watson.org> User-Agent: Opera Mail/9.01 (Win32) Cc: freebsd-performance@freebsd.org, freebsd-stable@freebsd.org Subject: Re: network performance problem 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: Mon, 18 Sep 2006 18:46:57 -0000 Hi, heres the output of route get 192.168.0.11: localhost# route get 192.168.0.11 route to: 192.168.0.11 destination: 192.168.0.0 mask: 255.255.255.0 interface: sis0 flags: recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire 0 0 0 0 0 0 1500 -69 I set the lo0 interface as you recommended from 16384 to 1500. Now I have the same thoughput as with the IP (~2.3MB/s). Shouldn´t FreeBSD recognize, that it is it´s local address, like openbsd does? Greetings Am 18.09.2006, 15:52 Uhr, schrieb Robert Watson : > > On Wed, 13 Sep 2006, Ingo wrote: > >> I`ve some problems with the network performance on my Soekris NET 4801. >> (Freebsd 6.1 release-p3) >> >> When I start "netio" on the soekris and do a "netio localhost", I get >> about >> 8.4 MB/sec, and when I start with "netio 192.168.0.11"(it´s localhost >> address) I get only ~2.3 MB/sec. That´s what top says when I do: > > What does "route get 192.168.0.11" return? > > What happens if you force the localhost MTU from whatever the default is > (most > likely 16k) to the same as the ethernet interface? > > Robert N M Watson > Computer Laboratory > University of Cambridge > >> >> localhost >> CPU states: 2.3% user, 0.0% nice, 72.5% system, 25.2% interrupt, >> 0.0% idle >> >> 192.168.0.11 >> CPU states: 1.2% user, 0.0% nice, 46.3% system, 52.5% interrupt, >> 0.0% idle >> >> As you can see, the interrupt load is more than doubled when I use the >> Ip >> address, and >> I´ve no idea why. >> >> >> Here are some other throughput results of the soekris: >> >> openbsd# ftp 192.16.8.0.20 2.0 MB/sec >> openbsd# iperf localhost 1.4 Mbit/sec >> openbsd# iperf 192.168.0.11(it´s localhost address) 1.4 Mbit/sec >> openbsd# netperf localhost 70MB/sec >> openbsd# netperf 192.168.0.11(it´s localhost address) 70MB/sec >> >> freebsd# ftp 192.168.0.20 2.3 MB/sec >> Freebsd# iperf localhost 45 Mbit/sec >> Freebsd# iperf 192.168.0.11 (it´s localhost address) 19 Mbit/sec >> Freebsd# netperf localhost 67 Mbit/sec >> Freebsd# netperf 192.168.0.11 (it´s localhost address) 19 Mbit/sec >> >> >> What causes the difference between localhost and the ip address on >> Freebsd? >> On Openbsd there is no diffenerce at all. >> >> >> Greetings >> -- >> Erstellt mit Operas revolutionärem E-Mail-Modul: >> http://www.opera.com/mail/ >> _______________________________________________ >> freebsd-performance@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-performance >> To unsubscribe, send any mail to >> "freebsd-performance-unsubscribe@freebsd.org"