Date: Sat, 17 Jul 1999 14:25:41 -0700 (PDT) From: Vincent Poy <vince@venus.GAIANET.NET> To: sthaug@nethelp.no Cc: tim@storm.digital-rain.com, freebsd-hackers@FreeBSD.ORG Subject: Re: poor ethernet performance? Message-ID: <Pine.BSF.4.05.9907171422550.331-100000@venus.GAIANET.NET> In-Reply-To: <51881.932205646@verdi.nethelp.no>
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On Sat, 17 Jul 1999 sthaug@nethelp.no wrote: > > I am benefiting from it for sure. I guess what I was asking > > originally was if the higher frequency rated cables will give it more > > headroom since the 100BaseTX ethernet does push CAT5 to the limit. > > 100BaseTX is specified to run on Cat5 cabling, and with proper Cat5 > cabling you get a a BER of 10^-8 or better. Speaking about specifications, what's the spec to run 100BaseT4? > As long as your cabling meets the Cat5 spec, you'll get 100 Mbps - > there's no possibility of "more headroom" with cables rated to higher > frequency. Note that 100BaseTX is different from 10BaseT (but similar > to synchronous serial lines) in that there is always a signal present. > Note also that FreeBSD can easily saturate 100 Mbps Ethernet. It meets the spec when shipped but the bends, curves, temperature and other factors do affect the performance. I guess a good way to test the cable is with FreeBSD since it's the only real OS I've seen that can do like real world speeds. The only thing is that has anyone really saw 12 Megabytes/sec Full Duplex under FreeBSD? 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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