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Document --benchmark_filter. Thanks to NAThompson for the original patch

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Eric Fiselier 2016-09-05 15:40:12 -06:00
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@ -462,6 +462,24 @@ static void BM_test(benchmark::State& state) {
}
```
## Running a subset of the benchmarks
The `--benchmark_filter=<regex>` option can be used to only run the benchmarks
which match the specified `<regex>`. For example:
```bash
$ ./run_benchmarks.x --benchmark_filter=BM_memcpy/32
Run on (1 X 2300 MHz CPU )
2016-06-25 19:34:24
Benchmark Time CPU Iterations
----------------------------------------------------
BM_memcpy/32 11 ns 11 ns 79545455
BM_memcpy/32k 2181 ns 2185 ns 324074
BM_memcpy/32 12 ns 12 ns 54687500
BM_memcpy/32k 1834 ns 1837 ns 357143
```
## Output Formats
The library supports multiple output formats. Use the
`--benchmark_format=<console|json|csv>` flag to set the format type. `console`