documenting benchmarks
diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
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+We have benchmarks, please consider running them: see our README for details.
Our CI tests check formatting automating. If such a test fails, please consider running the bash script:
diff --git a/README.md b/README.md
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fastfloat : 1042.38 MB/s (+/- 9.9 %) 49.68 Mfloat/s
```
-See <https://github.com/lemire/simple_fastfloat_benchmark> for our benchmarking
-code.
+See the [Benchmarking](#benchmarking) Section for instructions on how to run our benchmarks.
## Video
@@ -486,6 +485,29 @@
<https://github.com/fastfloat/fast_float/releases/download/v7.0.0/fast_float.h>
+## Benchmarking
+
+The project has its own benchmarks with realistic data inputs. Under Linux or macOS,
+you can use it as follows if your system supports C++17:
+
+```
+cmake -B build -D FASTFLOAT_BENCHMARKS=ON
+cmake --build build
+./build/benchmarks/realbenchmark
+```
+
+Importantly, by default, the benchmark is built in Release mode.
+
+The instructions are similar under Windows.
+
+Under Linux and macOS, it is recommended to run the benchmarks in a privileged manner to get access
+to hardware performance counters. You may be able to do so with the `sudo` command
+in some cases:
+
+```
+sudo ./build/benchmarks/realbenchmark
+```
+
## Packages
* The fast_float library is part of the [Conan package
