trace_processor: support tcp_retransmit_skb event
The tcp_retransmit_skb ftrace event could be used to track packet timeout
or fast retransmit. The patch parse the tcp_retransmit_skb event and show
the event as instant on async task tracker.
Bug: 215086208
Test: ui/run-dev-server & manaul check the UI behavior
Test: tools/diff_test_trace_processor.py <trace_processor_shell> \
--query-metric-filter='tcp_retransmit_skb'
Change-Id: I10c47e66ac66488ef883d5827d375ff6c7be63fc
Perfetto is a production-grade open-source stack for performance instrumentation and trace analysis. It offers services and libraries and for recording system-level and app-level traces, native + java heap profiling, a library for analyzing traces using SQL and a web-based UI to visualize and explore multi-GB traces.
See https://perfetto.dev/docs or the /docs/ directory for documentation.