Qin Chuanyu <qinchuanyu@xxxxxxxxxx> writes: > udp packet use 2 buffers at least, one for vnet_hdr and > one for skb->data. > we could change the threshold from 2 to 3, so the udp packet > which data buff only using single desc will gain from this. > the guest would avoid from allocating memory dynamically. > the host would avoid from translating indirect desc. > > Signed-off-by: Chuanyu Qin <qinchuanyu@xxxxxxxxxx> We should really adapt the threshold depending on how full the ring is. If it's gotten cramped recently, prefer indirect. See linux/average.h. Such a change would have to be benchmarked carefully though! Cheers, Rusty. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
