[Core] We should make preloading Jemalloc configurable for worker #47242
Description
Description
The PR #39446 disables preloading Jemalloc for workers totally. However, Jemalloc is still useful in some cases, and we could make it configurable if user setting env RAY_LD_PRELOAD as 0.
I did a inference test with limited memory, and we can see the OOM counts decrease from 900+ to 700.
Use case
No response