Re: FreeBSD 4.x and OS-X tcp performance

From: Henrik Gammelgaard (gammelgaard_at_bigfoot.com)
Date: 03/07/05

  • Next message: Daniel Hartmeier: "Re: FreeBSD 4.x and OS-X tcp performance" 
    Date: Mon, 07 Mar 2005 00:48:08 +0100
To: spork@fasttrackmonkey.com

    Charles Sprickman wrote:

    >
    > I'd really like to move past the duplex issues. I'm very very
    > familiar with that and already chased my tail on that one here and in
    > my many years of working at an ISP. I did a back-to-back test with
    > speed/duplex locked and I get the same result. All the switch ports
    > are running clean - no errors, which is something you'd normally see
    > if autoneg failed.
    >
    > Plus if you look at the matrix above, you can see that every other
    > combination in my "normal" config works. If there were a duplex
    > problem, I would be seeing it either from OS-X <-> OBSD or FBSD <->
    > OBSD. It also probably wouldn't allow me to get really fast UDP NFS
    > between the boxes.
    >
    > For fun I'm going to post a full tcpdump of an ftp session from one
    > box to the other, maybe someone can spot something there? It's
    > attached and bzip'd. It's a tcpdump of both hosts transferring a 1MB
    > tarfile.
    >
    > Thanks!
    >
    > Charles
    >

    I also had a problem recently with my PB running OS X 10.3.8 and an
    OpenBSD 3.6 box - no duplex settings helped and TCP performance was very
    very poor, just getting a working ssh connection from mac -> openbsd
    took maybe 10mins, oddly UDP traffic worked as it was supposed to.
    I didnt find the problem except that it worked OK once I replaced the
    NIC in the OpenBSD box with another one, think the original one was a
    very cheap lowend one and I replaced it with an old 3Com NIC and
    everything worked.

    With kinds regards,
    Henrik
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