[OpenAFS] Heavy performance loss on gigabit ethernet

Dale Ghent daleg@umbc.edu
Wed, 18 Aug 2004 03:31:09 -0400


On Aug 17, 2004, at 9:09 PM, Systems Administration wrote:

> I have already tested the assertions regarding ethernet functionality 
> and all tests show a network that is fully compliant with 802.* 
> standards - there are no physical or layer 2 errors reported by Linux 
> drivers, iperf, ping, traceroute, snort, tcpdump and I'm running out 
> of diagnostic tools.  Do you have a suggestion for some ethernet 
> tester that will tell me what part of the IEEE standards these vendors 
> are failing to implement - I'd be happy to go beat on them if I knew 
> which part of the standard was being mangled to cause AFS and only AFS 
> to fail.

I haven't seen Jumbo Frames mentioned, yet. Are you certain that isn't 
turned on in the server or the switch it's connected to where it 
shouldn't be?

/dale