From owner-freebsd-hackers Sat Jul 17 16:44:58 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from venus.GAIANET.NET (venus.GAIANET.NET [207.211.200.51]) by hub.freebsd.org (Postfix) with ESMTP id C41DF14CE6 for ; Sat, 17 Jul 1999 16:44:54 -0700 (PDT) (envelope-from vince@venus.GAIANET.NET) Received: from localhost (vince@localhost) by venus.GAIANET.NET (8.9.3/8.9.3) with ESMTP id QAA18842; Sat, 17 Jul 1999 16:41:35 -0700 (PDT) (envelope-from vince@venus.GAIANET.NET) Date: Sat, 17 Jul 1999 16:41:35 -0700 (PDT) From: Vincent Poy To: Matthew Dillon Cc: sthaug@nethelp.no, tim@storm.digital-rain.com, freebsd-hackers@FreeBSD.ORG Subject: Re: poor ethernet performance? In-Reply-To: <199907172320.QAA81716@apollo.backplane.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sat, 17 Jul 1999, Matthew Dillon wrote: > : Hmmm, how did you do the measurement and how big of a file does it > :need? > : > : With a 122MByte file, it only does 2644Kbytes/sec. This is > :between two Pentium II 450 machines with Intel Pro100+ NICs. > > 2.6 MB/sec is what I would expect if you were running the test > over an ssh link on a fast cpu - the encryption eats a lot of cpu. But > a normal rcp or ftp or data transfer can easily do 9-10 MBytes/sec. That was actually done with ftp between two machines connected Full Duplex to a Cisco Catalyst 2924XL switch. > This is over 100BaseTX, *HALF* duplex running through a hub. 9.9 > MBytes/sec. > (using 1 MByte = 1000 * 1000). > > But if I use ssh instead, which I do only so I remember to turn off > the shell service in my inetd.conf that I just turned on a moment ago, > I am limited by apollo's poor PPro-200 and get: > > test3:/root# ssh apollo -n "dd if=/images/swap/swap.209.157.86.6 bs=16k" > /dev/null > 8192+0 records in > 8192+0 records out > 134217728 bytes transferred in 96.545217 secs (1390206 bytes/sec) > test3:/root# Interesting... Cheers, Vince - vince@MCESTATE.COM - vince@GAIANET.NET ________ __ ____ Unix Networking Operations - FreeBSD-Real Unix for Free / / / / | / |[__ ] GaiaNet Corporation - M & C Estate / / / / | / | __] ] Beverly Hills, California USA 90210 / / / / / |/ / | __] ] HongKong Stars/Gravis UltraSound Mailing Lists Admin /_/_/_/_/|___/|_|[____] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message