On 06/03/12 01:18, Kevin Oberman wrote:
What can I say but that you are right. When I looked at the interface stats I found that the link overflow drops were through the roof! This confuses me a bit since the traffic is outbound and I woudl assume
Indeed, link overflow is incoming traffic that was dropped due to lack of rx resources. If you have flow control disabled, it is drops simply due to lack of space in the rx fifo. If you have flow control enabled, link overflow can include drops due to lack of host rx buffers as well. For primarily WAN traffic, we suggest that flow control be disabled (it is enabled by default). With f/c disabled, drops due to lack of rx buffers are counted as dropped_no_[big|small]_buffer At any rate, it is surprising to see link overflow increase on an outgoing unidirectional test. Is there other incoming traffic that you might not have been aware of? The only really unlikely thing I can think of is if something is buffering tens of thousands of acks and dumping them all at once. Drew _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
