OK. I'm using an Intel NIC, according to lspci it is: Ethernet controller: Intel Corp. 82540EM Gigabit Ethernet Controller (rev 02)

Using latest e1000 driver from Intel, from source.

This host (fedora core 2) is on a gigabit segment on our LAN. Other (Mac OSX) hosts on this segment are not having the problem.

An NT 4.0 box is on the 10/100 segment of the LAN. The fc2 host has smbmount-ed a directory on the NT machine.

Here's the problem: file transfers between these two computers have become extremely slow. Talking 50k/s.

Here's 'ifconfig -v eth0' output:
eth0      Link encap:Ethernet  HWaddr 00:07:E9:xx:xx:xx  
          inet addr:192.xxx.x.xx  Bcast:192.xxx.x.xxx  Mask:255.255.255.0
          inet6 addr: xxxx::xxx:xxxx:xxxx:xxxx/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:322464 errors:0 dropped:0 overruns:0 frame:0
          TX packets:304204 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:327465261 (312.2 Mb)  TX bytes:253277737 (241.5 Mb)
          Base address:0xd000 Memory:cff80000-cffa0000 

Thought it might be samba, but scp file transfers are just as slow. And it's any host on the 10/100 segment, not just the NT box.

I'm using the e1000 driver with the default parameter settings.

Can anybody help?
Thanks,
Steve
-- 
Steve Linabery
World Cycling Productions

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