This application connects to another mojo application, collects traces during indicated period of time and computes a number of results based on the collected traces. It can be used to measure performance of a mojo app, provided that the app being benchmarked participates in the tracing ecosystem.
The benchmarking app expects the following arguments:
--app=<app_url> - url of the application to be benchmarked--duration=<duration_seconds> - duration of the benchmark in secondsany other arguments are assumed to be descriptions of measurements to be conducted on the collected trace data. Each measurement has to be of form: <measurement_type>/<trace_event_category>/<trace_event_name>.
The following measurement types are available:
time_until - measures time until the first occurence of the event named trace_event_name in category trace_event_category.avg_duration - measures average duration of all events named trace_event_name in category trace_event_category.Devtools offers a helper script allowing to run a list of benchmarks, including on an Android device.