Comment by mcronce

It's been a bit since I've added it to an existing project, but at least as of a year or so ago, the Rust implementation (tracing + tracing-opentelemetry + opentelemetry-jaeger specifically for that project) was similar.

The impact on compile time and code size wasn't bad (for a project that was large and already pulling in a lot of crates), but it had a huge runtime cost - mostly allocator pressure in the form of temp allocations from what I could see. For a mostly I/O bound workload, it more than doubled CPU utilization and ballooned OS-measured memory consumption by >30%