Date: Thu, 17 Aug 2000 09:03:24 +0200 From: Bernd Walter <ticso@cicely5.cicely.de> To: Peter Jeremy <peter.jeremy@alcatel.com.au> Cc: current@FreeBSD.ORG Subject: Re: Slow ssh throughput with -current Message-ID: <20000817090324.A32185@cicely5.cicely.de> 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 %2B1000 References: <00Aug10.153604est.115242@border.alcanet.com.au> <00Aug14.140905est.115211@border.alcanet.com.au>
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On Mon, Aug 14, 2000 at 02:09:01PM +1000, Peter Jeremy wrote: > On 2000-Aug-10 15:36:01 +1000, Peter Jeremy <peter.jeremy@alcatel.com.au> 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
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