GC failed on unload level

Development World Creation
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1

I make a test to load and unload several streaming levels once 5s.After 15 min or more,it will carsh and report
LogGarbage: Warning: Spent more than 10.00s on routing FinishDestroy to objects (objects in queue: 29)
LogGarbage: Warning: [0]: Texture2D None.None, IsReadyForFinishDestroy: false
LogGarbage: Warning: [1]: Texture2D None.None, IsReadyForFinishDestroy: false
LogGarbage: Warning: [2]: Texture2D None.None, IsReadyForFinishDestroy: false
LogGarbage: Warning: [3]: Texture2D None.None, IsReadyForFinishDestroy: false
LogOutputDevice: Error: Spent to much time waiting for FinishDestroy for 29 object(s) (last object: Texture2D None.None), check log for details

The engine still logs after crash and it’ll make a hug log file, even 50GB if i do nothing.
Any helps for this? I have no idea about it.

2

it really depends on your code.
what are those t2d doing?
by that “is ready for finish destroy false” gives me the idea that the texture might still be in a state waiting for something.
do you use them to draw? there’s a function to finish a drawing after starting one i cant remember the name. i think it’s " end draw" and it exists on the drawing “context” object. Begin Draw Canvas to Render Target | Unreal Engine 5.2 Documentation?

are you keeping references to the texture? do you pass them around?
are you using cpp or bp?

4

I do nothing on level obejcts.,just load and unload the streaming levels.And i keep no refereces in codes. It works on cpp.

5

i don’t know much about it. with no context of your code all i have are really just guesses.
it would really help to see some of your code or what you actually are doing with these things.

my guess is you are keeping a reference to one of those textures, either on a material or in cpp or in bp. and hence can’t unload it.
specially since you are unloading dynamically.

the size of the log and spam is just unreal spin-lock waiting for it to be freed.

7

I don’t have the code either.I’m just using others’ paks to load and unload their levels.Only a few paks will make this.
And the loading code is in a big module, I can’t show it in a few codes.But i actually do nothing on textures.

8

maybe there’s some problem with the asset lifecycle inside those paks, or maybe some inter-dependency. i wouldn’t know for sure.
or maybe a deadlock when trying to un/load and something triggers a flush.