On Tue, Feb 14, 2017 at 12:26:55PM +0100, Vincenzo Maffione wrote: > Hi, > Have you tried to play with netmap sysctl parameters like: > > dev.netmap.buf_num > dev.netmap.ring_num > dev.netmap.if_num > > those are listed in the sysctl section of the netmap man page. man page hide details about calcul rules of this parameters.