# Intl Performance Microbenchmarks

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

[mozperftest](https://firefox-source-docs.mozilla.org/testing/perfdocs/mozperftest.html)

## Recording profiles for the Firefox Profiler

```sh
# 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 samply tool.
cargo install samply

# Open the path to the file.
samply load /path/to/perf-profile.json
```