Date: Mon, 19 Jul 1999 10:16:25 -0700 (PDT) From: "Jonathan M. Bresler" <jmb@hub.freebsd.org> To: rbezuide@oskar.nanoteq.co.za Cc: vince@venus.GAIANET.NET, sthaug@nethelp.no, tim@storm.digital-rain.com, freebsd-hackers@FreeBSD.ORG Subject: Re: poor ethernet performance? Message-ID: <19990719171625.0254914CB1@hub.freebsd.org> In-Reply-To: <199907190816.KAA22986@oskar.nanoteq.co.za> (message from Reinier Bezuidenhout on Mon, 19 Jul 1999 10:16:47 %2B0200 (SAT))
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> We have previously done many network performance tests for our > products running on FreeBSD ... > > We have found that when ever there is disk accessing involved, it > is not a good idea to look at the transfer figures. We did tests > with ftp and is was slow (compared to only memory generated data > e.g. ttcp) > > 1. If you want to test the network speed ... use ttcp or something > that generates the data and doesn't read it from disk. > absolutely right. netperf generates its own data on the fly. it does not generate any disk activity. > 2. When doing full-duplex and using fxp cards, stay away from X-over > cables ... use a full-duplex switch etc. ... the fxp cards are not > made to work with X-over cables (as far as I know - ala Intel spec) > note ... only for full-duplex tests. hmm....i have used intel cards on a cross-over cable regularly without any problems whatsoever. jmb To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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