Date: Sat, 17 Jul 1999 16:41:35 -0700 (PDT) From: Vincent Poy <vince@venus.GAIANET.NET> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: sthaug@nethelp.no, tim@storm.digital-rain.com, freebsd-hackers@FreeBSD.ORG Subject: Re: poor ethernet performance? Message-ID: <Pine.BSF.4.05.9907171638260.331-100000@venus.GAIANET.NET> In-Reply-To: <199907172320.QAA81716@apollo.backplane.com>
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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
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