tracepoints

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Mehrdad Arshad Rad edited this page Feb 6, 2021 · 2 revisions

Available tracepoints

sock:inet_sock_set_state

All TCP transitions could be observed by this tracepoint.

tcp:tcp_retransmit_skb

Traces retransmits. Useful for understanding network issues including congestion.

tcp:tcp_retransmit_synack

Tracing SYN/ACK retransmits.

tcp:tcp_destroy_sock

It can be used to know that the session has ended.

tcp:tcp_send_reset

This traces a RST send during a valid socket, to diagnose those type of issues.

tcp:tcp_receive_reset

Trace RST receive.

tcp:tcp_probe

For TCP congestion window tracing

Reference: Brendan Gregg's Blog