[Interest] Question to members of the Qt team: why does an empty project consumes so much memory on iOS?

Harri Pasanen harri at mpaja.com
Tue Apr 21 13:36:51 CEST 2015


On 21/04/2015 10:38, Nuno Santos wrote:
> I have been comparing the memory usage by an empty iOS and an empty Qt 
> project on iOS running on an iPad Air. It seems that this is not 
> comparable. Please take a look to the following image. The iOS native 
> project uses 16Mb of memory, while the Qt project needs almost 90Mb. 
> It happens that if the memory limit with an empty project is almost 
> next to the limit, how can a normal app run smoothly? I have made this 
> test, after realising that my app was using 160Mb on the iPad Air 
> simulator. This is huge!
>

Note that the simulator displays about 2.5 times bigger figures than an 
actual device.

(Some if it has to do with architecture, Intel seems to need more memory 
and space than arm).

Just my 2 cents,

Harri





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