Memory is increasing when loading a QML page but not freed completely after closing

[anda_skoa]

Probably I am not keeping any of the references. I am using loader or stackview to load the qml page.

That sounds fine.
I assume you are using "push" and "pop" on the stack view, so "pop" would have discarded the references to the previous top most page.

I am using Qt5.3.2 and I am loading all the resources externally. Not using qrc for loading either qml or Images.

I don't think that would make any difference.

If you are loading a lot of different types, then one thing that might increasingly consume memory is the component cache.
See QQmlEngine::clearComponentCache().

Cheers,
_

[mkreddy]

I tried using QQmlEngine::clearComponentCache(). But it is destroying the entire data hence crashing the application.

Could you please provide me some sample how can I use the QQmlEngine::clearComponentCache().

I tried using cashe: false and asynchronous: true in Image component. Its giving some positive result but not solving the problem completely.

Regards,
Murali Krishna

[anda_skoa]

Ah, looks like that was the wrong one. Try trimComponentCache().

In any case you probably need to look at this with a memory profile to see where the memory is allocated and check if you assumed it would be deallocated but wasn't.

Cheers,
_

[mkreddy]

Yeah sure I will use memory profile to check whats going wrong.
I observed some thing strange with a sample application which has the 2 qml pages which are loaded from main.qml. The main.qml contains two rectangle components and each qml has 4 Image components. I am loading these pages with Loader.

If I load this application I observed around 1.2 MB of increase in memory and then on close of these pages I didn't observed any change in memory.
After using cashe: false and asynchronous: true It has reduced the memory and around 0.1 -0.2 MB remains there.

I introduced 2 Text components and observed the memory. It increased 2.5-3 MB. after closing the loaded QML pages The memory reduced from 2.5 MB to 0.8 MB.

So with each text component there is a leak of around 0.4 MB. I tried using clearComponentCache(). But I didn't observed any progress.

[mkreddy]

I am attaching the sample project. Please have a look and suggest me what is wrong in my code.

[mkreddy]

Any one has any suggestion...??

I tried clearcomponentcache(), trimcomponentcache()
but I didn't find any result.

Please suggest me some thing.