Hi all After a bit of googling and unable to find an answer I have arrived here. Trying to figure out why there are drops
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 172.17.146.140 netmask 255.255.240.0 broadcast 172.17.159.255 inet6 fe80::215:5dff:fe90:cb95 prefixlen 64 scopeid 0x20<link> ether 00:15:5d:90:cb:95 txqueuelen 1000 (Ethernet) RX packets 685944132 bytes 94503551689 (88.0 GiB) RX errors 0 dropped 347130922 overruns 0 frame 0 TX packets 4299883 bytes 542934103 (517.7 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 ifpps --dev eth0 --promisc 3.10.0-693.11.6.el7.x86_64, eth0 (hv_netvsc 10000Mbit/s link:yes), t=1000ms, cpus=4/4 (consider to increase your sampling interval, e.g. -t 10000) rx: 0.078 MiB/t 514 pkts/t 275 drops/t 0 errors/t tx: 0.000 MiB/t 1 pkts/t 0 drops/t 0 errors/t rx: 90128.614 MiB 685967675 pkts 347143178 drops 0 errors tx: 517.788 MiB 4299901 pkts 0 drops 0 errors sys: 431 cs/t 152 procs 1 running 0 iowait mem: 3782M total 3577M used 1656M active 1631M inactive swap: 16375M total 0M used 0M cached cpu0 +: 0.0% usr/t 0.0% sys/t 100.0% idl/t 0.0% iow/t cpu1 |: 0.0% usr/t 0.0% sys/t 100.0% idl/t 0.0% iow/t cpu2 |: 0.0% usr/t 0.0% sys/t 100.0% idl/t 0.0% iow/t cpu3 -: 0.0% usr/t 0.0% sys/t 100.0% idl/t 0.0% iow/t avg: 0.0% 0.0% 100.0% 0.0% cpu0 +: 0 irqs/t 14 sirq rx/t 0 sirq tx/t cpu1 |: 0 irqs/t 22 sirq rx/t 0 sirq tx/t cpu2 |: 0 irqs/t 299 sirq rx/t 0 sirq tx/t cpu3 -: 0 irqs/t 28 sirq rx/t 0 sirq tx/t avg: 0.0 90.8 0.0 cpu0 +: 0 irqs cpu1 |: 0 irqs cpu2 |: 0 irqs cpu3 -: 0 irqs avg: 0.0 While googling I came across a script https://github.com/netoptimizer/network-testing/blob/master/bin/softnet_stat.pl in an attempt to find the reason for the drops but nothing is shown as below while "ifpps --dev eth0 --promisc"output shows drops Moreover the output of command ethtool -S eth0 NIC statistics: tx_scattered: 0 tx_no_memory: 0 tx_no_space: 0 tx_too_big: 0 tx_busy: 0 vf_rx_packets: 0 vf_rx_bytes: 0 vf_tx_packets: 0 vf_tx_bytes: 0 vf_tx_dropped: 0 tx_queue_0_packets: 4262005 tx_queue_0_bytes: 540057642 rx_queue_0_packets: 554975976 rx_queue_0_bytes: 75154134866 tx_queue_1_packets: 10016 tx_queue_1_bytes: 577068 rx_queue_1_packets: 39786263 rx_queue_1_bytes: 5886530842 tx_queue_2_packets: 9938 tx_queue_2_bytes: 573708 rx_queue_2_packets: 45523991 rx_queue_2_bytes: 6339758425 tx_queue_3_packets: 9752 tx_queue_3_bytes: 562584 rx_queue_3_packets: 44568047 rx_queue_3_bytes: 6938650998 Thanks in advance and apologies if I have missed something. Regards N -- You received this message because you are subscribed to the Google Groups "netsniff-ng" group. To unsubscribe from this group and stop receiving emails from it, send an email to netsniff-ng+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.