Date: Thu, 17 Aug 2000 14:11:06 +1000 From: Peter Jeremy <peter.jeremy@alcatel.com.au> To: current@FreeBSD.ORG Subject: Re: Slow ssh throughput with -current Message-ID: <00Aug17.141112est.115273@border.alcanet.com.au> 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 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 just finished instrumenting tcp_output.c to track the problem down, I find that it has vanished. It seems that it was fixed sometime between 3rd August and last night. The only change to tcp_output.c during this time was v1.46 - which only affects error behaviour and backing that change out had no effect (ie the problem is still gone). I don't recall seeing any commits that would have affected this problem. Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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