From owner-freebsd-current Thu Aug 17 0: 3:48 2000 Delivered-To: freebsd-current@freebsd.org Received: from mail.du.gtn.com (mail.du.gtn.com [194.77.9.57]) by hub.freebsd.org (Postfix) with ESMTP id 2695F37B640 for ; Thu, 17 Aug 2000 00:03:45 -0700 (PDT) (envelope-from ticso@cicely5.cicely.de) Received: from mail.cicely.de (cicely.de [194.231.9.142]) by mail.du.gtn.com (8.11.0.Beta3/8.11.0.Beta3) with ESMTP id e7H73Vc03267 (using TLSv1/SSLv3 with cipher EDH-RSA-DES-CBC3-SHA (168 bits) verified OK); Thu, 17 Aug 2000 09:03:34 +0200 (MET DST) Received: from cicely5.cicely.de (cicely5.cicely.de [10.1.5.7]) by mail.cicely.de (8.11.0.Beta1/8.11.0.Beta1) with ESMTP id e7H73Uq54738; Thu, 17 Aug 2000 09:03:31 +0200 (CEST) Received: (from ticso@localhost) by cicely5.cicely.de (8.9.3/8.9.2) id JAA32237; Thu, 17 Aug 2000 09:03:25 +0200 (CEST) (envelope-from ticso) Date: Thu, 17 Aug 2000 09:03:24 +0200 From: Bernd Walter To: Peter Jeremy Cc: current@FreeBSD.ORG Subject: Re: Slow ssh throughput with -current Message-ID: <20000817090324.A32185@cicely5.cicely.de> References: <00Aug10.153604est.115242@border.alcanet.com.au> <00Aug14.140905est.115211@border.alcanet.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0.1i In-Reply-To: <00Aug14.140905est.115211@border.alcanet.com.au>; from peter.jeremy@alcatel.com.au on Mon, Aug 14, 2000 at 02:09:01PM +1000 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, Aug 14, 2000 at 02:09:01PM +1000, Peter Jeremy wrote: > On 2000-Aug-10 15:36:01 +1000, Peter Jeremy wrote: > >I just noticed a really peculiar network slowdown with -current from > >about a week ago. The machine has two NICs - an old 16-bit SMC card > >(ed0) running 10baseT and a PCI SMC card (tx0) running 100baseTX full > >duplex. > > > >When I scp (either ssh-1.2.27 or OpenSSH) to a remote machine via ed0, > >I get a throughput of ~8KB/sec. When I go via tx0, I get ~3MB/sec > >(CPU limited). If I use ftp via ed0, I get wire speed (just over > >1MB/sec). > > Having done some more tests, and a bit more digging, I've found > the culprit is net.inet.tcp.newreno. When set to 1 (the default), > ssh (but not FTP) connections to hosts not on the same subnet > (as determined by in_localaddr()) have an effective window size of > 1 MSS. Same here. It seems that the default was 0 before at least on a current system from July. -- B.Walter COSMO-Project http://www.cosmo-project.de ticso@cicely.de Usergroup info@cosmo-project.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message