Knapsack splits tests evenly across parallel CI nodes to run fast CI build and save you time.
|knapsack gem||knapsack_pro gem|
|Is free||✓ Yes||✓ Yes, free plan|
|Regular Mode - a static tests split||✓ Yes||✓ Yes|
|Queue Mode - a dynamic tests split||No||✓ Yes|
|Tracking tests timing per commit, branch||No||✓ Yes|
|Support for other programming languages||No||✓ Yes|
|Support for CI providers||limited||✓ Yes|
|Installation README||Install README||Install README|
Do you know Knapsack Pro Ruby gem is available as Heroku add-on that's currently in beta and it's free to all beta users? It works with your current CI server. https://elements.heroku.com/addons/knapsack-pro
Knapsack Pro has Queue Mode that will split Ruby & JS tests in a dynamic way across parallel CI nodes to ensure each parallel job takes a similar time. Thanks to that there is no bottleneck in your CI pipelines.
See introduction how the Knapsack Pro add-on works https://youtu.be/rmXES2N0_QU
You may also find useful article how to run parallel dynos on Heroku CI to complete tests faster https://docs.knapsackpro.com/2019/how-to-run-tests-faster-on-heroku-ci-with-parallel-dynos