From owner-freebsd-net@FreeBSD.ORG Thu Nov 22 08:44:23 2012 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 6710911E for ; Thu, 22 Nov 2012 08:44:23 +0000 (UTC) (envelope-from marc@mpeters.org) Received: from mail.mpeters.org (mail.mpeters.org [78.46.104.142]) by mx1.freebsd.org (Postfix) with ESMTP id 187988FC08 for ; Thu, 22 Nov 2012 08:44:22 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.mpeters.org (Postfix) with ESMTP id 0154713200F for ; Thu, 22 Nov 2012 09:44:22 +0100 (CET) X-Virus-Scanned: amavisd-new at mpeters.org Received: from mail.mpeters.org ([127.0.0.1]) by localhost (mail.mpeters.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1v6ZIf8j7nR2 for ; Thu, 22 Nov 2012 09:44:20 +0100 (CET) Received: from [192.168.0.204] (unknown [62.159.86.18]) by mail.mpeters.org (Postfix) with ESMTPSA id 8C4DC13200E for ; Thu, 22 Nov 2012 09:44:20 +0100 (CET) Message-ID: <50ADE5E4.9090708@mpeters.org> Date: Thu, 22 Nov 2012 09:44:20 +0100 From: Marc Peters User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121104 Thunderbird/16.0.1 MIME-Version: 1.0 To: freebsd-net@freebsd.org Subject: Re: Low Bandwidth on intercontinental connections References: <50ACF62C.8000408@mpeters.org> <50ad087d.1892cc0a.2cce.3bf2@mx.google.com> <50AD1012.7020209@mpeters.org> <50AD14F8.8050001@xip.at> In-Reply-To: <50AD14F8.8050001@xip.at> X-Enigmail-Version: 1.5a1pre Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Nov 2012 08:44:23 -0000 On 11/21/2012 06:52 PM, Ingo Flaschberger wrote: > Am 21.11.2012 18:32, schrieb Marc Peters: >> Hi Ben, >> >> i don't think this is memory related, too. We used plain CLI scp ot ftp >> from base, both times. >> >> Here is the requested data: >> >> Linux ---> FreeBSD: >> >> root@linux:~# scp jdk-6u33-linux-x64.bin 172.16.3.10: >> Password: >> jdk-6u33-linux-x64.bin 89% 61MB 59.0KB/s >> >> FreeBSD ---> Linux: >> >> [root@freebsd ~]# scp test.tgz 172.16.4.50: >> Password: >> test.tgz 100% 59MB 1.1MB/s 00:55 >> [root@freebsd ~]# >> >> From BSD to Linux is not as fast as L <--> L. >> >> I don't think, this is network related in some sort. > > hm - sounds like a duplex problem? duplex is fine (as showed by ifconfig in the first post). The switches also show full duplex on a Gig link for this. > > *) whats the distance between Linux and FreeBSD box? some 10k kilometers. One of our DCs is in Germany, the other in the US. > *) check network counters: > linux: ifconfig > FreeBSD: netstat -nia > look for errors no errors and no collisions on any system > check switches between (or as far as possible) for full duplex, also > FreeBSD (ifconfig) the internal switches are working properly. > *) check and compare tcpdump for the FreeBSD hosts on the receiver side, it showed a lot of window size changes and from time to time a lot of duplicate ACKs. i will file a PR (as Adrian asked) and see to get a matching tcpdump and SIFTR output. > > Kind regards, > Ingo Flaschberger > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"