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I just popped off a branch of my production Rails 4.1.8 app (Can't quite do 4.2 yet), and upgraded it 2 Ruby 2.2. I ran 271 spec against it 5 times before the upgrade and 16 times after. I should have done more before :(

For 2.1.5

AVG: 18.02

MEDIAN: 18.11

MIN: 16.26

MAX: 19.6

For 2.2

AVG: 18.162~

MEDIAN: 15.23

MIN: 14.44 <- nice

MAX: 47.03 <- first run, wut?

It looks better, but I haven't profiled the app on Passenger yet to see how well it plays with the whole app.




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