> As someone said somewhere - can't recall - the driver architecture
> greatly matters. What's the onboard gigabit NIC?
> 
> Also thinking, it could also be that your gigabit NIC has a bad
> physical connection to the switch, causing frame errors and bad TCP/IP
> performance.

The onboard gigabit NIC is 3Com Corporation 3c940 10/100/1000Base-T
[Marvell] , the driver used is the sk98lin module from the 2.6.8
kernel, I don't think its a bad physical connection because i'm using
the same cable when I tested the 3c905 NIC and ifconfig shows no
errors. I also tested using iperf with the other machine here with
gigabit NIC and i'm getting this results:
[816]  0.0-10.0 sec   631 MBytes   529 Mbits/sec
[804]  0.0-10.0 sec   641 MBytes   538 Mbits/sec
[812]  0.0-10.0 sec   642 MBytes   539 Mbits/sec
but actual network transfers are really slow, what else should I
check, sayang naman yun kung di magagamit yun gigabit

Thanks.

-- 
Carlo Roy V. Taguinod
Linux Registered User #283313
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