It's likely and believable that the different flavors seem to run at different speeds with different architectures. I also wouldn't be surprised to find the Ora

It's likely and believable that the different flavors seem to run at different speeds with different architectures. I also wouldn't be surprised to find the Oracle implementation to always be faster. I have a real hard time believing that OpenJDK has some huge flaws that prevent its production use as a blanket statement. Hell, way back in the early 00s I remember having to use the JRocket JDK instead of the Sun one due to some weird corner case- so I am fully aware there are cases you can run in to that would necessitate one implementation over another. But calling OpenJDK unfit for production at this point in it's life is either FUD or straight lack of knowledge. What are you running that OpenJDK seems to be so incompatible with? I've literally never had an issue with OpenJDK 7 or 8 and I've deployed applications that serve millions of requests per day in many flavors of OS.