From: bob@kunk.jriver.com
To: Paul.Mackerras@cs.anu.edu.au
Cc: linuxppc-dev@lists.linuxppc.org
Subject: Re: Odd ethernet problem
Date: Fri, 6 Aug 1999 00:46:31 -0500 (CDT) [thread overview]
Message-ID: <19990806054632.8201.qmail@kunk.jriver.com> (raw)
In-Reply-To: <199908060541.PAA20067@tango.anu.edu.au> from Paul Mackerras at "Aug 6, 1999 03:41:18 pm"
User Paul Mackerras says:
> bob@kunk.jriver.com wrote:
>
> > When the iMac talked to either Unix box from linux-ppc (several kernels
> > tested), I would get nearly 100 percent on receive but REALLY slow
> > response on transmit (like about 40k/sec). Watching the lights on the hub,
> > it appears that there is a really big delay restarting transmit after
> > a collision occurs. Perhaps duplex set wrong?
>
> I have seen this too but I haven't figured out what's going wrong yet.
> My suspicion is that some packets are getting corrupted somehow on
> transmission and then we are having to wait for a TCP retransmit. A
> tcpdump might yield some interesting information.
>
> Paul.
Good suggestion, I'll setup a tcp dump and check it out. I did try hacking
the transmit timer without success...
Bob
--
Robert E. Brose II N0QBJ
http://www.jriver.com/~bob/
bob@kunk.jriver.com
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next prev parent reply other threads:[~1999-08-06 5:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-08-06 4:53 Odd ethnetnet problem bob
1999-08-06 5:41 ` Paul Mackerras
1999-08-06 5:46 ` bob [this message]
1999-08-08 17:57 ` Odd iMac ethernet problem bob
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