[plug] ethernet cards and their settings/throughput

[Michael Collard]

On Fri, 2005-04-08 at 23:35 +0800, Chris Griffin wrote:
> OK, I know this has been talked about before but,
> I have two systems connected together with a 1Gb cat 6 crossover
> cable, I have tried all sorts of settings (ethtool) and the best I can
> get is about 24 Mb. I am running RedHat (oops, better make that Fedora
> 3). One end is an Athlon 1.2GHz the other an Athlon XP 3200+.
> I figure I should get a lot better than this. Any hints?
> BTW, I find that ethtool does not work that well, I seem to have to
> issue successive commands (followed by ethtool eth0 to see what it
> actuall set it to) in order to get to the setting I wanted, almost as
> though each try skips to the next setting combination and rolls around
> to the start again.

You should probably be using mii-tool or ethtool (if possible) to find
out what speed your cards have negotiated (assuming your card supports
them, as my built in 3Com does not). Then if they have negotiated 1Gb,
try using scp to transfer a file, I've always achieved best rates using
that :)

Cheers
Michael