firefox/intl/benchmarks/test/xpcshell/README.md

Intl Performance Microbenchmarks

This folder contains micro benchmarks using the [mozperftest][] suite.

mozperftest

Recording profiles for the Firefox Profiler

# Run the perftest as an xpcshell test.
MOZ_PROFILER_STARTUP=1 \
  MOZ_PROFILER_SHUTDOWN=/path/to/perf-profile.json \
  ./mach xpcshell-test intl/benchmarks/perftest_dateTimeFormat.js

# Install the profiler-symbol-server tool.
cargo install profiler-symbol-server

# Open the path to the file.
profiler-symbol-server --open /path/to/perf-profile.json