Wt

Hi,

I did a test as below,

1. Add 10000 elements to page, I can see that memory size has been increased around 15Mb (with Mac activity monitor Private Memory Size)
2. Remove all those 10000 elements with parent -> clear() method, the memory size has been decreased by less than 5MB.
3. Recheck memory usage after 10 minutes, the memory size didn't drop.
4. Add 10000 elements to page, again I can see that memory size has been increased around 13Mb
5. Remove all those 10000 elements with parent -> clear() method, the memory size has been decreased by less than 3MB.
6. Recheck memory usage after 10 minutes, the memory size didn't drop.

With this test result, it seems the memory cannot fully released by removing them, what d

My project has serious concerns over memory usage, any help on identifying the cause or releasing the memory size is very much appreciated, thanks in advance.

My test code:

button1 -> clicked().connect([ = ] {
for (int i = 0; i < 10000; i++) {
parent -> addWidget(Wt::cpp14::make_unique < Wt::WPushButton > ());
}
});

button2 -> clicked().connect([ = ] { parent -> clear(); });

Best Regards,
Jason Dong