Re: Linux 1.3.59 Netperf with large packets

Rick Jones (raj@hpisrdq.cup.hp.com)
Thu, 22 Feb 1996 14:27:07 -0800

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In reply to: Christoph Lameter: "Re: Linux tcp over loopback"

I'm running Linux 1.3.59 and I see funny behavior with large
packets. We've got a Myrinet card in the machine that has an MTU
of 8432 bytes. Perhaps Linux hasn't ever needed to deal with
messages larger than 4k?

One thing worth trying might be a test over loopback - especially if
there is a way to increase the loopback MTU to the size of your
interface card.

In the test below, the sender is a Pentium Linux box and the
receiver is an UltraSparc.

Are you sure it isn't the UltraSparc?-) I guess it isn't, otherwise
there would be a large number of sends, but small number of
receives...

Also, what happens if you try a message size of 4097 bytes?

rick jones

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