There is most likely a problem with the chelsio T210 driver (not in kernel yet) and/or the TSO support in 2.6.15.
I built 2.6.15 with only my send-to-self patch included to enable my tests: http://www.candelatech.com/oss/sts.patch I am running two connections at about 500Mbps tx and rx between two ports on the same machine, connected by a single fibre cable. Writing 60k buffers and reading up to 64k. The send & rx buffer sizes are quite large. The symptom is that the Send-Q as shown in netstat fills up at a about 5.6MB after a few minutes of running. Lots of packets (250kpps or so) keep flowing across the NICs..mostly ACKs to the same sequence number it appears, but TCP progress is not made. If I run the tests w/out TSO, the system runs slower (about 680Mbps send+rx on two ports), but does not lock up. I've sent mail to the Chelsio folks, but I assume the problem could also be a more generic problem with TSO. Thanks, Ben -- Ben Greear <[EMAIL PROTECTED]> Candela Technologies Inc http://www.candelatech.com - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
