> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Igor Ryzhov > I found some problem with virtio xstats counters. > > Example: > > rx_good_packets: 3 > rx_good_bytes: 180 > rx_errors: 0 > > rx_q0_good_packets: 3 > rx_q0_good_bytes: 180 > rx_q0_errors: 0 > > rx_q0_multicast_packets: 3 > rx_q0_broadcast_packets: 1 > rx_q0_undersize_packets: 3
> It means that undersize packets are counted as good packets instead of errors. Are you sending 64 byte packets? There are no 4 bytes of CRC on virtual interfaces, so 60 bytes per packet is OK. > Or maybe > size of packet is calculated wrong. > I don't have time now to check it more deeply - I can do it sometime later, > but maybe > someone want to help. Are the packets multicast or broadcast? It looks like one of the counters there is wrong. > PS. Is it a common practice to count broadcast packets twice - in broadcast > and multicast > counters? No packet should be counted twice - it must be put into one bucket of mutli, broad or unicast. -Harry
