[Development] QML Demo has a higher memory usage than Wdiget Demo

YaNing Lu dluyaning at gmail.com
Thu Jun 16 14:32:58 CEST 2022

>You didn't answer the question.>>The difference is that QML is a different technology from widgets.>>If you want more details, please use a memory profiler to size the heap (as >opposed to memory mappings) and find out consumes most memory.

Thanks Thiago,

I understand that my program has a high memory footprint, which has a
lot to do with my implementation, so I just wrote the demo for comparison.
QML and widgets use different technologies, can I understand the meaning
of no comparison between qml and widgets programs.

BTW, I re-uploaded my demo in https://bugreports.qt.io/browse/QTBUG-104322.
In fact, my problem is that there are two:

Why does qml have higher memory usage than widgets.(At present, I am also

analyzing through source code and memory detection tools)

If optimized based on qml demo, how to make its memory usage consistent
with widget demo or similar.

Lu YaNing

Thiago Macieira <thiago.macieira at intel.com> 于2022年6月15日周三 16:05写道:

> On Wednesday, 15 June 2022 02:51:27 PDT YaNing Lu wrote:
> > We read the USS of the demo for comparison, and the following is the
> > comparison data.
> >
> > 5.15.2
> > qml-demo : 31.3M
> > widget-demo : 24.7M
> >
> > 6.2.4
> > qml-demo : 36.0M
> > widget-demo : 22.4M
> What are you measuring here? What tool did you use?
> --
> Thiago Macieira - thiago.macieira (AT) intel.com
>   Cloud Software Architect - Intel DCAI Cloud Engineering
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