Simple Ruby load test library. Give it a try !

Warning: High CPU is needed to run this or you will get an unreliable result. If you are an AWS user, I suggest you to look for spot compute instance for this kind of task.


Install it yourself as:

$ gem install gas_load_tester


Require the library

require 'gas_load_tester'

For simple usage

simple_test ={client: 10000, time: 60}) do
  RestClient.get("", {})

With html output

simple_test ={client: 10000, time: 60}) true, file_name: '/mytest/mysite_result') do
  RestClient.get("", {})
Single test outout is shown as below:

Gas load tester single test

Group comparison test

simple_group_test =[
  {"client" => 100, "time" => 5},
  {"client" => 150, "time" => 10},
  {"client" => 160, "time" => 7}
]) true, file_name: '/mytest/mysite_group_result.html') do
  RestClient.get("", {})
Group test outout is shown as below:

Gas load tester group test


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


Bug reports and pull requests are welcome on GitHub at


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