On Mon, 2009-08-17 at 18:13 -0400, Christoph Lameter wrote:

On Mon, 17 Aug 2009, Sridhar Samudrala wrote:

quoted

What about ethtool -S ? Does it report any errors?

Neither. This is is a broadcom bnx2 NIC.

Are you sure the packets are dropped at the sender?
Another place where packet drops/errors are counted is
    /proc/net/softnet_stat
It tracks some counters that could result in drops. I thought these are
all receive statistics. But looks like cpu_collision is a tx stat. The
name of the structure is netif_rx_stat and it includes cpu_collison 
counter.

Thanks
Sridhar