RSpec and Rails tests are 100% CPU bound(blog.andrewcantino.com)
blog.andrewcantino.com
RSpec and Rails tests are 100% CPU bound
http://blog.andrewcantino.com/post/1411733593/rspec-is-cpu-bound
http://blog.andrewcantino.com/post/1411733593/rspec-is-cpu-bound
Faster rspec: spork & parallel_tests runner. One test process per CPU core, and a preloaded rail environment, test run split across processes.