@jamesgolick why?
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Replying to @jamesgolick
@jamesgolick o_O it means HotSpot can inline Ruby code in the same way it inlines Java code…1 reply 0 retweets 0 likes -
Replying to @jamesgolick
@jamesgolick if the x86 assembly matches the output from equivalent Java code, then it’s Java speed. Take that for what you will2 replies 0 retweets 0 likes -
Replying to @jamesgolick
@jamesgolick the short answer is boxed nums still hurt numerical performance but invocation itself is quite fast /cc@headius1 reply 0 retweets 0 likes -
Replying to @jamesgolick
@jamesgolick took me a month to get http://livingsocial.com tuned up to faster than MRI on JRuby. Fortunately the JVM has awesome profilers1 reply 0 retweets 0 likes
@jamesgolick eliminating runtime stack trace generation was probably the biggest win. Swallowing exceptions and caller are quite slow
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