Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/intl/benchmarks/README.md b/intl/benchmarks/README.md
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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 profiler-symbol-server tool.
+cargo install profiler-symbol-server
+
+# Open the path to the file.
+profiler-symbol-server --open /path/to/perf-profile.json
+```