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# ruby/benchmark
This directory has benchmark definitions to be run with
[benchmark\_driver.gem](https://github.com/benchmark-driver/benchmark-driver).
## Normal usage
Execute `gem install benchmark-driver` and run a command like:
```bash
# Run a benchmark script with the ruby in the $PATH
benchmark-driver benchmark/erb_render.yml
# Run all benchmark scripts with multiple Ruby executables or options
benchmark-driver benchmark/*.yml -e /path/to/ruby -e '/path/to/ruby --jit'
# Or compare Ruby versions managed by rbenv
benchmark-driver benchmark/*.yml --rbenv '2.5.1;2.6.0-preview2 --jit'
```
## make benchmark
Using `make benchmark`, `make update-benchmark-driver` automatically downloads
the supported version of benchmark-driver, and it runs benchmarks with the downloaded
benchmark-driver.
```bash
# Run all benchmarks with the ruby in the $PATH and the built ruby
make benchmark
# Or compare with specific ruby binary
make benchmark COMPARE_RUBY="/path/to/ruby --jit"
# Run vm1 benchmarks
make benchmark ITEM=vm1
# Run some limited benchmarks in ITEM-matched files
make benchmark ITEM=vm1 OPTS=--filter=block
# You can specify the benchmark by an exact filename instead of using
# the default argument: ARGS=$(srcdir)/benchmark/*$(ITEM)*.yml
make benchmark ARGS=../benchmark/erb_render.yml
# You can specify any option via $OPTS
make benchmark OPTS="--help"
# With `make benchmark`, some special runner plugins are available:
# -r peak, -r size
make benchmark ITEM=vm2_bigarray OPTS="-r peak"
```
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