Full Duplex Lights

[Peter Black]

Jason Thomas wrote:
> 
> Mogens Kjaer [mk@crc.dk] wrote:
> > Jason Thomas wrote:
> > >
> > > Does anyone have any idea when the state for the full duplex lights will be
> > > implemented into the tulip drivers, or if it has already been done and i'm
> > > possible doing something wrong.
> > >
> > > tulip-diag reports full duplex, but the light on the card does not work.
> > > and the through put beetween to 100Mbit fullduplex machines is about a 5th of
> > > what it shouldi be.
> >
> > Can't you just ignore the LED's? As long as it works? I think the
> > explanation is,
> > that the LED's are controlled differently on all tulip NIC's, so to make
> > them
> > work would be a big job.
> 
> yes i can ignore them, it was only a query.
> 
> >
> > How do you test the speed of the transfers? How fast are the machines?
> 
> one machine is P2-450 and the other is AMD K6-2-350 both with D-link DFE500TX
> nics and on the same switch witch is a D-link 10/100 autonegotiating switch.
> The switch reports full-duplex always, even if the tulip-diag prog say
> half-duplex.
> 
> we transferred a 40MB file using scp. which seems to transfer at about 1MB
> sec.  Shouldn't this be around 12MB sec, at 100Mbits.

	Scp has to encrypt (and conpress depending if you asked it to) the file
before sending it down the line. Although the time spent to encrypt the
data should be minimal as compared to compression.

> 
> We also have another switch different model and same result.
> 
> >
> > Which switch are the NIC's connected to? Does it autonegotiate full
> > duplex?
> >
> > Mogens
> >
> > --
> > Mogens Kjaer, Carlsberg Laboratory, Dept. of Chemistry
> > Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
> > Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
> > Email: mk@crc.dk Homepage: http://www.crc.dk
> 
> --
> Jason Thomas                           Phone:  +61 2 6257 7111
> System Administrator                   Fax:    +61 2 6257 7311
> tSA Consulting Group Pty. Ltd.         Mobile: 0418 29 66 81
> 1 Hall Street Lyneham ACT 2602         http://www.topic.com.au/
> 
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