Committed memory growing over time

Hi !
We are using snmalloc in game engine, where we want both performance and memory efficiency. In our game, as
player moves through environment, lot of content is generated procedurally on worker threads. It is common,
that we allocate (quite big) chunks of memory on one thread, and then release it after while from different thread.
I observe following behavior: even if number of allocated bytes stays roughly same (around 6 GB) memory used by
snmalloc is constantly growing and is significantly higher : usually about 3 GB more and this value is increasing.
Now, question is : is this expected behavior ? Are there any configuration settings which can help us reduce committed
memory size ?

Thanks !
Petr

Start by reproducing the reported workload: large allocations on worker threads followed by releases from different threads, while comparing live allocated bytes with snmalloc's committed memory. Review the allocator's documented configuration and memory-reclamation behavior; done means establishing whether the growth is expected and identifying a verified setting or a narrowly scoped follow-up if it is not.