Hey, I recently benchmarked using jemalloc on my NUMA servers, and the difference was quite large.
Using the system allocator I got 710k req/s, while with jemalloc I got 830k req/s. That's 17% faster just by dynamically linking with a library.

Anyone else tried this?

CE have released their own take on tracing, with following notable changes compared to original ZIO Tracing:

• Instead of parsing lambdas, CE throws exceptions in IO constructors and cleans up stacktraces. That also means there is no regional control of tracing and AFAIK no way to avoid slight overhead even when tracing is completely disabled – but OTOH it may probably work on Scala.js
• Trace