netgear gigabit tuning

Chris Black cblack at
Mon Apr 16 13:23:45 PDT 2001

We have just installed a netgear 4-port copper gigabit switch and are using 
it with netgear GA620T cards. We are trying to get maximum performance out 
of this equipment. What I am looking for is tuning instructions for gigabit 
cards. I have already done:
echo 262144 > /proc/sys/net/core/rmem_max
echo 262144 > /proc/sys/net/core/wmem_max

As directed on the AceNIC driver page. I was unable to get transfers to work 
when I tried increasing the mtu to 9000 for jumbo frame support though.
Right now I get around 39MB/s transfer rate. I am hoping to improve this. 
What type of numbers do other people with gigabit ethernet setups get?

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