Subject: Strange network performance
To: None <port-i386@netbsd.org>
From: None <Geir.I.Jensen@Runit.Sintef.No>
List: port-i386
Date: 09/16/1998 18:15:42
Hi,

My network performance is way below what a Linux box collogue of mine
achieves (ok, so its not the same underlying hardware, but...)

In normal use, the throughput is under 100KB/sec on a 100Mb channel!
There must be something wrong somewhere. I wrote a script to test the
performance for various packet sizes. The resulting graphs are located
at (I didn't want to bloat the list): 

	http://www.jk.priv.no/~gij/NetBSD/     (128.39.6.12)

We can see a substantial drop in performance around packet sizes of
100 bytes and 200 bytes. I assume this is a driver problem.

Whats truly amazing, is that the performance is much better when the
card is in promiscuous mode. Why is this? I would have expected
decreased performance. 

Any idea of how I can fix this?

Regards,
-- 
Geir Inge Jensen                                    gij@jk.priv.no
                                                    http://www.jk.priv.no/