Profilizer

Profilizer is a Ruby gem for easy profile of methods. It helps you to track how fast you methods are, how much memory the consume and how much objects were allocated.

The normal hand on profiling in Ruby doesn't require any gems and looks like this:

def profile
  start = Time.now
  yield if block_given?
  finish = Time.now
  puts "Duration: #{finish - start}"
end

However, it is not handy in case you want more options. What if you can do the following?

class A
  include Profilizer

  profilize def foo
    a = 1
    b = 2
    c = a + b
  end
end

A.new.foo 

It will output in STDOUT something like:

Objects Freed: 39
Time: 0.02 seconds
Memory usage: 2.05 MB

Add this line to your application's Gemfile:

gem 'profilizer'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install profilizer

class A
  include Profilizer

  profilize def foo
    a = 1
    b = 2
    c = a + b
  end
end

A.new.foo 

It prints in STDOUT something like:

Objects Freed: 39
Time: 0.02 seconds
Memory usage: 2.05 MB

What if you only want to profile time, used memory, or objects allocations only. Here is how you could config it:

class A
  include Profilizer

  def foo
    a = 1
    b = 2
    c = a + b
  end

  profilize :foo, time: true, memory: false, gc: false
end

A.new.foo 

It prints:

Time: 0.02 seconds

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/dkremez/profilizer.

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