Where are the fast dynamic languages?

Lua? It is very simple language. Unfortunately, there is a performance penalty with dynamic langues, which wont go away.

Does anyone here have a single example of a performance problem caused by using a 'dynamic' language rather than a 'static' language? The only performance problems I've ever encountered 'in the wild' have been down to things like database access, I/O, bad sorting algorithms, string concatenation, etc.

Here, for starters:<p><a href="http://www.strongtalk.org/" rel="nofollow">http://www.strongtalk.org/</a> <a href="http://rubini.us/" rel="nofollow">http://rubini.us/</a> <a href="http://www.cons.org/cmucl/" rel="nofollow">http://www.cons.org/cmucl/</a>

Solving this problem is the main goal of the Cobra language:<p><a href="http://cobra-language.com/docs/why/" rel="nofollow">http://cobra-language.com/docs/why/</a><p>I'll be curious to see if it succeeds.

<a href="http://www.factorcode.org" rel="nofollow">http://www.factorcode.org</a>

Objective-C?