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People who don't know how JVM optimizes usually underestimate it. People who don't know how GCC optimizes usually overestimate it.
OSS projects: It takes a lot for users to stick their neck out and contribute. Treat contributions - even bad ones - like a gift.
JRuby master now starts up in 1.9 mode by default. 1.8 IS DEAD...LONG LIVE 1.9.
I have a lot of respect for companies that sponsor events/devs/etc to "give back" to OSS projects. I wish they all did.
It's unreasonable to expect companies to invest in Ruby when half the libraries they use will be unmaintained or deprecated in 6 months.
I'm all for progress, but jesus, Rubyists...how about we maintain libraries for more than a year for a change? Old != bad.
If your JVM app suffers from too much GC, your problem isn't GC...it's too many objects, and your allocation costs are probably even bigger.
Apache-2.0, instead of BSD or MIT, because the latter two do nothing to help prevent patented contributions from dooming your project.
I don't even see the bytecode. All I see is blonde, brunette, redhead... #whatisthejvm