QML compiler?

[bkamps]

I'm having QML performance issues (loading a couple simple QML files already takes 2 seconds on my embedded ARM target).

When a QML file is loaded the file is parsed, compiled and objects are created.

Is there a way to compile the QML files to a binary format so there is no more need to parse and compile? "Discussion about this":http://www.mail-archive.com/interest@qt-project.org/msg02247.html

[andre]

No. It was mentioned as an idea, but AFAIK, no-once put in the effort to actually implement it.

[bkamps]

So there is no way to skip the parse / compiling step?

Well then I guess it's time to optimze my QML to the max....

[lgeyer]

Have you already profiled your application to find out where your performance bottleneck acutally is?

Qt 5 includes the qmlmin tool which tries to reduce QML files.

[bkamps]

I was trying to setup the profiler and got it working (but I had to leave work, so to be continued on monday :)).

One of the issues I already found myself is that I use a lot (20 or so) loading to dynamicly load Windows. For each loader I use Binding to connect C++ and QML when the loader loads a Window. When I remove the loaders this save me about 5 seconds of parse/compile QML time! Do you have a suggestion how to optimze this?

[lgeyer]

Unfortunately not. At first I would say you should try to get the profiler up and running to find out where you actually need to improve performance.

If you still face problems in certain situations I would suggest to take the issues to the mailing list (development@qt-project.org).