From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 6 Aug 1999 15:41:18 +1000 Message-Id: <199908060541.PAA20067@tango.anu.edu.au> From: Paul Mackerras To: bob@kunk.jriver.com CC: linuxppc-dev@lists.linuxppc.org In-reply-to: <19990806045342.6946.qmail@kunk.jriver.com> (bob@kunk.jriver.com) Subject: Re: Odd ethnetnet problem Reply-to: Paul.Mackerras@cs.anu.edu.au References: <19990806045342.6946.qmail@kunk.jriver.com> Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: 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. [[ This message was sent via the linuxppc-dev mailing list. Replies are ]] [[ not forced back to the list, so be sure to Cc linuxppc-dev if your ]] [[ reply is of general interest. Please check http://lists.linuxppc.org/ ]] [[ and http://www.linuxppc.org/ for useful information before posting. ]]