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For the author, performance is metioned in passing several times in this piece. Performance is really the key problem in the adoption of Groovy. According to the last benchmarks I saw Groovy is slower than Ruby, which is slower than Python, which is slower than Java, which is slower than C# which is a little slower than C++, which is slower than C, which is slower than assembler. That's a long way down the list.

I would like to see a nice performance comparison chart showing how the new releases impact this performance story.

Java is slower than C#? Give us the link would you?

@Pantuky, you're really spreading FUD here. Groovy 1.6 is definitely faster than both Ruby or Python, at least according to the alioth shootout benchmark. So check your benchmarks or bring us some facts, but stop spreading FUD like this.

> Groovy 1.6 is definitely faster than both Ruby or Python, at least according to the alioth shootout benchmark.

According to that source it seems that Groovy is slower than Python for 6 programs (sometimes 10x slower) and Groovy is faster than Python on 8 programs (sometimes only 1.1x and 1.2x faster).

http://shootout.alioth.debian.org/gp4/benchmark.php?test=all&lang=groovy&lang2=python