Memory leak even when call Node.destroy()

Cocos Creator
#1

Hello, cocos developers!

I added 1000 Nodes that has Graphics in it.

testGraphics2(count = 1000) {
const parent = this.node.getChildByName(“PopupStage”);
for (let i = 0; i < count; i++) {
const shape = new Node();
parent.addChild(shape);
const g = shape.addComponent(Graphics);
console.log(${i+1}th line draw.);
g.lineWidth = 2;
g.strokeColor = new Color(255, 0, 0);
g.moveTo(-800, -count / 2 + i);
g.lineTo(0, 0);
g.stroke();
}
}

And when press key ‘r’, I destroy all children.
export function gs_dg_remove_all_children() {
const children = global.gs_stage[gs_popup_stage].children;
console.log(gs_dg_remove_all_children(): delete ${children.length} children);
for (let i = children.length - 1; i >= 0; i–) {
children[i].destroy();
}
}
The two functions are called, but destory() doesn’t free any memory.

Animation

How to free memory of node, spriteFrame, label etc?

Memory is not free by Node.destroy()
#2

We’ll check the problem

#3

This issue has been received by engineers at windows platform: Graphics component node still has a large amount of memory occupied after executing destroy · Issue #16291 · cocos/cocos-engine · GitHub and we plan to fix it in v3.8.2.

#4

That’s okay, Thank you very much.
Then android and ios will be fixed also, right?

#5

Android and iOS have not been tested, if there is a problem will be resolved.

#6

Cool, I will wait v3.8.2.

#7

This function (node and label) also increase memory and can’t be free.

testText2(count = 1000) {
const parent = this.node.getChildByName(“PopupStage”);
for (let i = 0; i < count; i++) {
const node = new Node();
parent.addChild(node);
node.setPosition(new Vec3(-count / 2 + i, -count / 2 + i, 0));
const label = node.addComponent(Label);
label.string = “Test Text.”;
label.fontSize = 80;
label.color = new Color(255, 100, 0);
}
}

I hope you to test it and fix in v3.8.2

#8

Fixed at Memleak fix in jsb conversions by PatriceJiang · Pull Request #16354 · cocos/cocos-engine · GitHub

#10

Thanks for your work!!

Now create v3.8.1 is released.
How can I merge your PR ?
When will v3.8.2 be released?

#11

3.8.2 may be released in 2024.1 .

You could customize the engine to apply the patch.

Reference: Cocos Creator 3.8 Manual - Engine Customization Workflow