Flex Compiler 4.0 25% more rapid than Flex 3 compiler

Its stated in adobe site that the Flash Builder 4 compiler is indeed 25% more performing than the previous Flex Builder 3 compiler.

How ca开发者_开发技巧n I confirm that?

For example if I make a simple application on Fx3 and the same on Fx4, then how would I compare the compiler performance using my project?

Thx FlexBoz

You can use the benchmark compiler argument to output compile times and such.

I'm in agreement with SuperSaiyen that you'd likely need a project of significant size to see any differences. My own experience in upgrading from Flex Builder 3 to Flash Builder 4 has been that, yeah, mxmlc is probably a little bit faster in FB4 but the best way to improve compile times is to optimize your project (e.g., move all embedded fonts to a library project and add them to your main project via SWCs).