metrics: Switch Wattson per rail to interval_intersect Switch per rail Wattson metrics to interval_intersect() so that overlapping intervals/periods can be handled. Bug: 350065024 Test: tools/diff_test_trace_processor.py out/linux/trace_processor_shell --name-filter '.*wattson.*' Change-Id: Ia9efe22223b3ddadcf35a468be1bac31cae9f82d Signed-off-by: Samuel Wu <wusamuel@google.com>
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.