mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2024-11-15 06:14:58 +00:00
67 lines
1.8 KiB
Markdown
67 lines
1.8 KiB
Markdown
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<!-- prettier-ignore-start -->
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[comment]: # (
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SPDX-License-Identifier: GPL-3.0-or-later
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)
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[comment]: # (
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SPDX-FileCopyrightText: 2020 Carles Fernandez-Prades <carles.fernandez@cttc.es>
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)
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<!-- prettier-ignore-end -->
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## Benchmarks
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This is a collection of implementation benchmarks based on
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[Benchmark](https://github.com/google/benchmark). It is useful to developers for
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assessing which is the fastest implementation of a given snippet of code in
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their machine, and to keep a track about them over different machines and
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compilers. The results may vary over different system architectures, compiler
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versions, building modes, C++ standard version used by the compiler, etc.
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If Benchmark is not found in your system, CMake will download, build and
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statically link against that library for you at building time.
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This collection is only built if the option `ENABLE_BENCHMARKS` is enabled when
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configuring `gnss-sdr` project's building:
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```
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$ cmake -DENABLE_BENCHMARKS=ON ..
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```
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## Basic usage
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Just execute the binaries generated in your `install` folder.
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Example:
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```
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$ cd ../install
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$ ./benchmark_copy
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```
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### Output formats
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The benchmarks support multiple output formats. Use the
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`--benchmark_format=<console|json|csv>` flag (or set the
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`BENCHMARK_FORMAT=<console|json|csv>` environment variable) to set the format
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type. `console` is the default format.
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Write benchmark results to a file with the `--benchmark_out=<filename>` option.
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Example:
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```
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$ ./benchmark_copy --benchmark_format=json --benchmark_out=benchmark_copy.json
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```
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### Statistics
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The number of runs of each benchmark is specified globally by the
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`--benchmark_repetitions` flag. When a benchmark is run more than once the mean,
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median and standard deviation of the runs will be reported.
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Example:
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```
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$ ./benchmark_copy --benchmark_repetitions=10
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```
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