Hi,
I'm running kernel 2.4.0-test9-pre4 on a Dell GX1 (PIII-500) with a Znyx
4port 10/100 card (4 tulip 21143 ethernet controllers onboard). With the
ports locked at 10mbps full duplex, and traffic (64byte UDP packets) from
our generator running through the box, I am seeing a little under 2% packet
loss in shortterm stats gathering (< 10minutes). Decreasing the rate to
about 5mbps seems to reduce the loss to 0. Running traffic for extended
periods of time (1hr or more - I left it running over the weekend) will show
a total loss of about 3-3.5%.
I've tried the stock tulip driver, as well as employing the modified tulip
driver to take advantage of hardware flow control. No change between the
two.
I originally thought the problem was due to the card assigning 1 or 2 IRQs
to all of the ports, thus raising the possibility of IRQ sharing problems.
I then moved the card to the 1st slot, and it was then able to obtain a
unique IRQ for each port. After I disabled the system's built-in ethernet
(which also claimed an IRQ used by the Znyx card) and restarted the traffic
flow, I noticed that the loss decreased about 0.2%.
I've also tried replacing the card with no change.
Any ideas?
Cheers!
Jon
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sat Sep 30 2000 - 21:00:16 EST