Re: [PLUG] Android Forums

[Matthew Rosewarne <mrosewarne@inoutbox.com>]

On Tuesday 20 November 2007, Josh Goldstein wrote:
> I agree it isn't, but I wasn't talking about bytecode.
> Java has had a JIT compiler for years now, that generates machine code.
> Check out these results:
> http://shootout.alioth.debian.org/gp4/benchmark.php?test=allâ=all Unless
> I'm misreading that chart, Java looks like it's doing better than a _lot_
> of other languages.

Clearly, there needs to be machine code at some point.  JIT is just the 
technique the Java VM uses to transform its bytecode into executable machine 
code.  There aren't really any other good ways to do what Java does, but 
compiling bytecode at runtime carries with it a considerable overhead.  The 
code the JIT compiler generates may be as good as an equivalent C compiler, 
but that generation still needs to happen, so more resources will be used 
overall.

%!PS: Remember: "Lies, damn lies, and benchmarks." :>

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