On my MacBook I see a process called RAQLThumbnailExtension that is using 7GB RAM (!) It is part of RealityKit:
Doing a sample shows a stack trace with the following interesting line:
and within that call there are calls to:
(full stack is very deep so I won't share it all here.)
The Open Files view in Activity Monitor shows that this process has opened up a USDZ file that I downloaded some time ago. If I kill the process, it starts up again, reloads the file and goes back to using 7GB RAM on my machine.
My guess is that this process is trying to be helpful and render thumbnails of any USD files on the machine, but in this case it is getting bogged down and unable to complete the render for this file. It is a large USD file of a very large 3d scene, so I'm guessing it just can't handle it and is stuck.
I am curious if there is a way to turn off thumbnail generation of USD files. This seems like something I can live without, especially if I can get 7GB of RAM back in return.
Also in general it doesn't seem like autogeneration of thumbnails of USD scenes is a great idea given how large and complex they can be.
Code Block /System/Library/Frameworks/RealityKit.framework/PlugIns/RAQLThumbnailExtension.appex/Contents/MacOS/RAQLThumbnailExtension
Doing a sample shows a stack trace with the following interesting line:
Code Block specialized static AssetLoader.importUSDZFile(info:completion:) (in RAQLThumbnailExtension)
and within that call there are calls to:
Code Block re::AssetManager::createAssetEntryForNamedAsset re::MeshAssetLoader::createRuntimeData re::createMeshCollectionFromMeshAsset re::mtl::Device::makeBuffer
(full stack is very deep so I won't share it all here.)
The Open Files view in Activity Monitor shows that this process has opened up a USDZ file that I downloaded some time ago. If I kill the process, it starts up again, reloads the file and goes back to using 7GB RAM on my machine.
My guess is that this process is trying to be helpful and render thumbnails of any USD files on the machine, but in this case it is getting bogged down and unable to complete the render for this file. It is a large USD file of a very large 3d scene, so I'm guessing it just can't handle it and is stuck.
I am curious if there is a way to turn off thumbnail generation of USD files. This seems like something I can live without, especially if I can get 7GB of RAM back in return.
Also in general it doesn't seem like autogeneration of thumbnails of USD scenes is a great idea given how large and complex they can be.
