[tolas]

Same here. We were struggling to fit 2 unicorn workers on a 1x dyno but can easily get 4 on a 2x. We're paying the same amount for twice the concurrency. The 2x dynos with unicorn have pretty much solved the queuing issues for us.

[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)