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54 lines
1.4 KiB
54 lines
1.4 KiB
# Building and Running |
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Benchmarks are implemented using [Google Benchmark](https://github.com/google/benchmark). |
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To build the benchmarks in this directory you need to set the benchmark |
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option while configuring the build with meson: |
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``` |
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meson build -Dbenchmark=enabled --buildtype=release |
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``` |
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or: |
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``` |
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meson build -Dbenchmark=enabled --buildtype=debugoptimized |
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``` |
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Then build a specific benchmark binaries with ninja: |
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``` |
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ninja -Cbuild perf/benchmark-set |
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``` |
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or just build the whole project: |
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``` |
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ninja -Cbuild |
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``` |
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Finally, to run one of the benchmarks: |
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``` |
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./build/perf/benchmark-set |
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``` |
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It's possible to filter the benchmarks being run and customize the output |
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via flags to the benchmark binary. See the |
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[Google Benchmark User Guide](https://github.com/google/benchmark/blob/main/docs/user_guide.md#user-guide) for more details. |
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# Profiling |
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Configure the build to include debug information for profiling: |
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``` |
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CXXFLAGS="-fno-omit-frame-pointer" meson --reconfigure build -Dbenchmark=enabled --buildtype=debug |
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ninja -Cbuild |
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``` |
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Then run the benchmark with perf: |
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``` |
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perf record -g build/perf/benchmark-subset --benchmark_filter="BM_subset_codepoints/subset_notocjk/100000" --benchmark_repetitions=5 |
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``` |
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You probably want to filter to a specific benchmark of interest and set the number of repititions high enough to get a good sampling of profile data. |
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Finally view the profile with: |
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perf report
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