can not release memory

I used cesium in the angular2 to create an earth component. like this

When this component is logged off I have manually destroyed the viewer objectand when I destory this component

ngOnDestroy() {
  this.viewer.entities.removeAll();
  this.viewer.destroy();
}

In my program, this component is in a state of rotation that is constantly created and destroyed.

But I found that when the component is created will take about 100MB of memory, and in the destruction will not release memory. So when the program runs for some time, the memory consumption is very alarming.

I worry that there will be some memory leaks, there is no way to manually release the memory occupied by webgl?

[GunOmniscience]

Proposal try use this.viewer?.canvas.getContext('webgl')?.getExtension('WEBGL_lose_context')?.loseContext(); will find memory leak recovery normal!!!

[mramato]

@OmarShehata my original code snippet no longer causes large memory increase in Chrome. We should be able to just close this. Everything else is outside of our control so there’s no reason to keep this issue open. As long as Viewer.destroy is being called, memory gets freed.

Please confirm https://github.com/CesiumGS/cesium/issues/5462#issuecomment-308130948 doesn’t lead to unbounded memory growth or anything like that for you.