packet drop with intel gigabit / marwell gigabit
oxy at field.hu
Sat Mar 18 11:44:13 UTC 2006
i had the packet drop problem with the marwell yukon gigabitcard:
(system is an amd 2000+xp, 512mb ram, fbsd 6.0-p5)
when the apache ran, with no http, just used to share files and the traffic was
2-2,5MB/S i had 14-17% packet drop on the gigabit interface..
with the sysctl i succesfully pulled it down to 12-14%, but it was terrible,
so i bought an intel pro/1000 gt.
with this i have 3-6% drop with same traffic load on the other interface..
when i stop the apache packet drop falls down to 0-0.1%, which is great.
but with apache it's terrible..
first i changed some sysctl settings, benchmarked all change with
iperf (udp test).i changed these:
i have three variables in load.conf:
then i tried 4BSD and ULE scheduler, ULE was better, but i accept any suggestion and tip :)
and after all i realized that it's not a bit better, than before...
please give me some hints, advices, tips, sysctl settings, kernel config parameters, anything to get rid of the packet loss..
here's my kernel config: http://field.hu/kernconf.txt
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