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.
--
Andre
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