Rust uses jemalloc which has per-thread-pooling (sort of). There is very little lock contention as there are multiple pools per-thread. Also per thread pooling

Rust uses jemalloc which has per-thread-pooling (sort of). There is very little lock contention as there are multiple pools per-thread. Also per thread pooling doesn't use more memory then not. In some cases it actually uses less. Citation: https://people.freebsd.org/~jasone/jemalloc/bsdcan2006/jemalloc.pdf https://people.freebsd.org/~jasone/jemalloc/bsdcan2006/jemal...