On Sun, Dec 22, 2002 at 10:59:52AM -0500, Robert Watson wrote:
> On Sat, 21 Dec 2002, matthew c. mead wrote:

> > I have a Linux box and FreeBSD box sitting on a 100Mbit ethernet segment
> > that cannot seem to talk to one another faster than 150K/s.  I've been
> > using scp, ftp, http, to test this. 

> And you've done tests in both directions, or just in one?

Both.

> Could you try using a non-TCP performance measurement tool of some sort? 
> I.e., some sort of UDP throughput test.  Because of your comment about the
> two boxes talking to windows fine, it sounds likely to be a TCP
> interaction, but it would be useful to check and see.

I didn't get around to it before I started looking at
hardware/driver.  I dropped a 3c905 into the Linux box and things
improved.  I grabbed a new ethernet card elsewhere today and it
works just fine.

> I've CC'd Matt Dillon because he's fixed a number of subtle TCP bugs of
> this sort in the past and can probably provide some debugging guidance.

I think it's the Linux driver.  Sorry for the false alert.  This would
be a fun one to figure out if it were tcp stack interactions.  :(


-matt

-- 
matthew c. mead

http://www.goof.com/~mmead/

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