Javascript-jit question

[dongdong]

Hi,

The default configure (qt-everywhere-opensource-src-4.7.2) is build the JavaScriptCore JIT compiler.

If I use '-no-javascript-jit' option, Will it affect QtWebkit performance?
How JavaScriptCore JIT compiler works?
How do I know whether JIT compiler works or not?

Thanks!

[mohsen]

Probably disabling javascript will affect performance. But i don't know how much it's effective when a non-included javascript page where loaded.

[nowrep]

Disabling just in time (JIT) compiler will surely affect QtWebKit performance in javascript related tasks.

You can get some numbers from "this":http://webkit.sed.hu/blog/20091027/building-qtwebkit-windows blog
"Runnig time with different JavaScript execution models" table