Andre Oppermann wrote: > Raphael H. Becker wrote: > >> On Fri, Sep 17, 2004 at 02:48:21PM +0200, Andre Oppermann wrote: >> >>> "Raphael H. Becker" wrote: >>> >>>> My guess: The 5.3-Boxes send bigger TCP-Windows than our switch has >>>> buffer for each port resulting in massive packetloss or something like >>>> that. The sender is "too fast" for the switch or the switch isn't able >>>> to convert from 1000MBit to 100MBit under heavy load >>>> (store&forward-buffer) >>> >>> >>> Could you send me the output of (after you have run the 1000->100 test): >>> >>> # sysctl net.inet.tcp >>> # sysctl net.inet.tcp.hostcache.list >>> # netstat -s -p tcp >>> # netstat -s -p ip >> >> >> http://rhb.uugrn.org/FreeBSD/bugs/5.x/1000-to-100/check_before.txt >> http://rhb.uugrn.org/FreeBSD/bugs/5.x/1000-to-100/check_after.txt > > > Could you please provide the same information (except the second sysctl > one) > from the target machine as well. You don't have to show the difference > between before and after but try to make sure that not much other traffic > was going than the test. And could you do this on the 5.3 machine: # sysctl net.inet.tcp.rfc3042=0 then restart and run the tests plus providing data for the 5.3 and 4.10 machine again. -- AndreReceived on Fri Sep 17 2004 - 19:30:34 UTC
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