от в System -> Settings -> Tunables добавляем
# a value of -1 means create 1 per cpu core
net.isr.maxthreads = -1
net.isr.bindthreads = 1
# Allow NIC drivers to use the ISR ueues
net.isr.dispatch = deferred
# Enable RSS
net.inet.rss.enabled = 1
# because I have 4 cores net.inet.rss.bits = 2