While testing out the ixgbe driver we've observed this failure in the stack code, here is the info:
The test engineer is using iperf, typically with 16 threads. If the driver is using either legacy or MSI interrupts we will see broken pipes, in dmesg its due to sonewconn() failing in syncache_socket(). Whats interesting is that when I have multiple RX queues configured and using MSI/X this doesnt happen, at least not very often. It does not seem to hurt performance horribly, iperf just spawns another thread, but I was wondering if there is some underlying tuneable I dont know about that would stop this from happening?? And any theory about why it doesnt happen with multiple queues? Jack _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
