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Re: em0 and tunnel performance problem



after digging deeper it found out that the whole em0 driver worth nothing...
when i set the media to auto it's operating in half duplex (i found out after a couple of benchmarks with iperf), when i set it to 100basetx and full duplex manually the result is
worse...
any idea?

----- Original Message ----- From: "OxY" <oxy@xxxxxxxx>
To: <freebsd-performance@xxxxxxxxxxx>
Sent: Wednesday, December 28, 2005 9:22 AM
Subject: em0 and tunnel performance problem


hi!

i have an intel etherexpress gigabit card on 100mbit port and fbsd 6.0-p1..
my box is a proxy, it's traffic is 100/100mbit constant..
unfortunately i have to use tunnel and that is the source of my problem.
when i enable the tunnel and the packages are going through it the performance is poor.. it seems that it's not full duplex, the speed is around 50/50mbit, and have 10-15% packet loss..
i tried to enable/disable polling, and used these sysctl vars:

kern.polling.enable=1
kern.ipc.somaxconn=2048
net.inet.tcp.inflight.enable=0
net.inet.ip.portrange.randomized=0
net.inet.tcp.sendspace=65536
kern.ipc.maxsockbuf=786432
net.inet.tcp.delayed_ack=0
net.inet.tcp.newreno=0
net.inet.ip.intr_queue_maxlen=1024
net.inet.tcp.blackhole=2
net.inet.udp.blackhole=1
net.inet.ip.rtmaxcache=1024

without tunnel the speed is 100/100mbit, great.

ps: with linux its all OK, but i wanna use fbsd :)

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