ui: Add a plugin showing IO request congestion This CL introduces a new plugin showing the number of IO operations in the kernel IO queue or the device for each block device. This metric helps us understand device utilization and saturation. Bug: 378402293 Test: Check with a local dev server Test: tools/diff_test_trace_processor.py Change-Id: Ic2def7dd291919fac770435e16ca87d963a77ba9
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.