My test-bed has two of these NICs connected to each other via
a cross-over cable. Both NICs are in the same machine...
Here are some performance numbers I see:
tcp/ip send + receive in user-space:
112Mbps on each port (does not count any packet over-head,
and my generator/receiver is not the fastest thing around)
pktgen (kernel pkt generator module):
60-byte packets, sending 1kpps in one direction, and maximum possible
in the other. Was able to generate 122,000 packets-per-second.
(A tulip 10/100 NIC can do 140kpps in this configuration)
Average Latency: 22 micro-seconds.
0 dropped packets over 10+ minute run.
1514-byte packets, sending 1kpps in one direction, max possible in
the other. 25.8kpps (310Mbps) in the fast direction.
Average Latency: 17 miliseconds (127 micro-seconds for the 1kpps direction)
2000 dropped pkts, 5.8 million sent during this test.
So, not too bad, probably the 32/33 PCI bus is most of the bottle-neck.
The good part is, no errors or other strangnesses were seen with the driver.
Enjoy,
Ben
-- Ben Greear <greearb@candelatech.com> <Ben_Greear AT excite.com> President of Candela Technologies Inc http://www.candelatech.com ScryMUD: http://scry.wanfear.com http://scry.wanfear.com/~greear
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