On Sun, 18 Jul 1999 sth...@nethelp.no wrote:
> > 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?
>
> If you mean mega = 1048576, it's impossible since this is faster than 100
> Mbps whichever way you count it.
>
> If you mean mega = 1000000, it depends on which way you're counting. The
> "speed of light" for TCP, application to application, on 100 Mbps Ethernet
> is 100 * 1460/1538 = 94.93 Mbps. This assumes full duplex.
I mean Mega as in 1000000. 100Mbps Ethernet should be equal to
about 12500Kbytes/sec which is equal to 12.5Mbytes/sec. 94.93Megabits/sec
doesn't equal to 100Megabits/sec.
> I've measured 94.87 Mbps myself on full duplex 100BaseTX (back to back
> with a crossover cable or through a switch). This is close enough to
> the "speed of light" that I see no point in trying to improve on it...
Yeah but what's the transfer rate you get?
Cheers,
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