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Previously Time.now was switched to use Time.new as it added support for
the in: argument. Unfortunately because Class#new is a cfunc this
requires always allocating a Hash.
This commit switches Time.now back to using a builtin time_s_now. This
avoids the extra Hash allocation and is about 3x faster.
$ benchmark-driver -e './ruby;3.1::~/.rubies/ruby-3.1.0/bin/ruby;3.0::~/.rubies/ruby-3.0.2/bin/ruby' benchmark/time_now.yml
Warming up --------------------------------------
Time.now 6.704M i/s - 6.710M times in 1.000814s (149.16ns/i, 328clocks/i)
Time.now(in: "+09:00") 2.003M i/s - 2.112M times in 1.054330s (499.31ns/i)
Calculating -------------------------------------
./ruby 3.1 3.0
Time.now 7.693M 2.763M 6.394M i/s - 20.113M times in 2.614428s 7.278710s 3.145572s
Time.now(in: "+09:00") 2.030M 1.260M 1.617M i/s - 6.008M times in 2.960132s 4.769378s 3.716537s
Comparison:
Time.now
./ruby: 7693129.7 i/s
3.0: 6394109.2 i/s - 1.20x slower
3.1: 2763282.5 i/s - 2.78x slower
Time.now(in: "+09:00")
./ruby: 2029757.4 i/s
3.0: 1616652.3 i/s - 1.26x slower
3.1: 1259776.2 i/s - 1.61x slower
ruby/benchmark
This directory has benchmark definitions to be run with benchmark_driver.gem.
Normal usage
Execute gem install benchmark_driver and run a command like:
# Run a benchmark script with the ruby in the $PATH
benchmark-driver benchmark/app_fib.rb
# Run benchmark scripts with multiple Ruby executables or options
benchmark-driver benchmark/*.rb -e /path/to/ruby -e '/path/to/ruby --jit'
# Or compare Ruby versions managed by rbenv
benchmark-driver benchmark/*.rb --rbenv '2.5.1;2.6.0-preview2 --jit'
# You can collect many metrics in many ways
benchmark-driver benchmark/*.rb --runner memory --output markdown
# Some are defined with YAML for complex setup or accurate measurement
benchmark-driver benchmark/*.yml
See also:
Usage: benchmark-driver [options] RUBY|YAML...
-r, --runner TYPE Specify runner type: ips, time, memory, once (default: ips)
-o, --output TYPE Specify output type: compare, simple, markdown, record (default: compare)
-e, --executables EXECS Ruby executables (e1::path1 arg1; e2::path2 arg2;...)
--rbenv VERSIONS Ruby executables in rbenv (x.x.x arg1;y.y.y arg2;...)
--repeat-count NUM Try benchmark NUM times and use the fastest result or the worst memory usage
--repeat-result TYPE Yield "best", "average" or "worst" result with --repeat-count (default: best)
--bundler Install and use gems specified in Gemfile
--filter REGEXP Filter out benchmarks with given regexp
--run-duration SECONDS Warmup estimates loop_count to run for this duration (default: 3)
-v, --verbose Verbose mode. Multiple -v options increase visibility (max: 2)
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.
# 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 vm benchmarks
make benchmark ITEM=vm
# Run some limited benchmarks in ITEM-matched files
make benchmark ITEM=vm OPTS=--filter=block
# You can specify the benchmark by an exact filename instead of using the default argument:
# ARGS = $$(find $(srcdir)/benchmark -maxdepth 1 -name '*$(ITEM)*.yml' -o -name '*$(ITEM)*.rb')
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, -r total, -r utime, -r stime, -r cutime, -r cstime
make benchmark ITEM=vm_bigarray OPTS="-r peak"