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# 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
```
[Dauer der Verarbeitung: 0.15 Sekunden, vorverarbeitet 2026-09-29]