Ciara Loftus <ciara.loftus@xxxxxxxxx> writes: > This series introduces tracing infrastructure for AF_XDP sockets (xsks). > A trace event 'xsk_packet_drop' is created which can be enabled by toggling > > /sys/kernel/debug/tracing/events/xsk/xsk_packet_drop/enable > > When enabled and packets are dropped in the kernel, traces are generated > which describe the reason for the packet drop as well as the netdev and > qid information of the xsk which encountered the drop. > > Example traces: > > 507.588563: xsk_packet_drop: netdev: eth0 qid 0 reason: rxq full > 507.588567: xsk_packet_drop: netdev: eth0 qid 0 reason: packet too big > 507.588568: xsk_packet_drop: netdev: eth0 qid 0 reason: fq empty > > The event can also be monitored using perf: > > perf stat -a -e xsk:xsk_packet_drop Would it make sense to also hook this up to drop_monitor? -Toke
