10 Pines Blog
Since the last post, a lot of things happened: some things were fixed, some tests got faster and I learned that some aspects of JRuby are just slow (for now).
First of all, the author of parallel_tests was very kind to not only accept my pull requests, but to provide feedback and even fix my broken code instead of rejecting it. There was a way in RSpec to correctly calculate time spent on each file, instead of doing it per example (which resulted in the problems mentioned in the previous post). This resulted in increased CPU throughput (at least in MRI) as all processors could be loaded at the same time, instead of having them working together only a fraction of the time (because some of them finished earlier and remained idle).
18 May 2013