Revelation Labs - Mongrel vs. Passenger vs. Unicorn

A quick word of caution before reading: everyone should do their own performance testing. Depending on your system/your stack/your code your result my vary. We tested mongrel, passenger and the new kid on the block: unicorn. Our goal in testing wasn’t to test a simple rack or rails app. Our app is complex. We wanted to see what each of these servers could do with a very complicated action in our a