MicroProfiler

Did you ever wish you had a Ruby performance profiler with almost no features?

No? Well, if you did, then this is the gem for you!

Add this line to your application's Gemfile:

gem 'micro_profiler'

And then execute:

$ bundle

Or install it yourself as:

$ gem install micro_profiler

Just wrap the code you want to profile in a block like this:

def expensive_method
  MicroProfiler.measure do
    array = []
    10000.times do
      string = 'ABC' * 1000
      array.unshift(string)
    end
    array
  end
end

And the measurements will print to STDOUT like this:

--- Performance Measurements ---
Calling Method: #expensive_method:26
Garbage Collection: Disabled
Memory Usage: 89 MB
Number of Garbage Collection Runs: 4
Time Elapsed: 0.06 seconds

By default, garbage collection is disabled. Re-enable it by passing garbage_collection: true to MicroProfiler.measure.

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/jaysonvirissimo/micro-profiler.

The gem is available as open source under the terms of the MIT License.