With ack-filter-aggressive I get results similar to rrul1 in ~10% of the runs, 90% are similar to rrul2. With ack-filter I haven't managed yet to get a rrul1 result, all of them are similar to rrul2. Will experiment more today. George On Tue, Nov 28, 2017 at 11:01 PM, Dave Taht wrote: > the astounding figure is dropping ~70% of all packets, and tcp still > works at all. > > 682411 pkt (dropped 1511579 ...) > > is your 2nd result repeatable? What happens with just "ack-filter" not > aggressive? > > I keep thinking that a way to coax more performance out of 40GigE+ > might be to drop more acks (as correctly as possible) before they even > hit the server. > >