BlueGreenProcess

A library that solves GC bottlenecks with multi-process.

Installation

Install the gem and add to the application's Gemfile by executing:

$ bundle add blue_green_process

If bundler is not being used to manage dependencies, install the gem by executing:

$ gem install blue_green_process

Usage

BlueGreenProcess.configure do |config|
  config.after_fork = ->{ puts 'forked!'  }
end

process = BlueGreenProcess.new(
  worker_instance: BlueGreenProcess::BaseWorker.new,
  max_work: 14,
)

40.times do
  process.work
end

sleep(1)

process.shutdown
loop do
  result = Process.waitall
  if result.empty?
    break
  else
    sleep(0.01)
  end
end

Development

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 the created tag, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/blue_green_process.

License

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

NOTE

• 前回の処理が終わっていないのにqueuingしない
• workerの処理内容は固定

TODO

• runしている間にsignalをもらったらすぐにdieを送りたい
• プロセスを入れ替えるときに変数を受け渡しをする
• queueしてからのdequeueするまでの時間を測定したい
  • webサーバでよくあるqueued timeみたいな扱い
  • これが伸びると致命的なのでチューニングできるようにしたいため
• inactiveからactiveへの切り替えになる時間を測定したい
  • GCが長引いてactiveプロセスが処理開始に時間がかかるので