On Sat, Feb 9, 2013 at 1:07 PM, Thomas Wuerthinger <thomas.wuerthin...@oracle.com> wrote: > Do you also have startup performance metrics - I assume the numbers below > are about peak performance?
It seems to warm up very quickly; there's sometimes 2x slower perf on the first iteration, but it rapidly settles. Overall startup time is considerably better than JRuby. > What is the approximate % of language feature completeness of Topaz and do > you think this aspect is relevant when comparing performance? Hard to say. They consulted me and other Ruby implementers to learn the most difficult features to implement, and made sure they put those in place. But I've had a lot of trouble with these benchmarks, partially due to missing language features. The specific language features we recommended they implement before measuring perf are mostly related to closure state and cross-frame variable access. In JRuby, such things require allocation on the heap, and since closure-receiving methods don't specialize (or do context-sensitive caller-callee profiling) EA can't ever get rid of those structures. The allocation and value indirection kills us. - Charlie _______________________________________________ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
