[rickyc091]

Wait up... I'm a bit confused here. How is it that you were struggling with 2 unicorns on a 1x (512mb) dyno, but 4 unicorns works on a 2x (1024mb) dyno?

[jordanthoms]

Unicorn instances fork after loading rails, so they share memory. (This will work better on ruby 2.0 with the copy on write friendly GC)