Async Rust never left the MVP state | Hacker News

A Hacker News thread debated an article arguing async Rust still carries runtime overhead and missed compiler optimizations.

Some commenters said the headline was overstated, while others agreed async abstractions can be awkward for fine-grained concurrency.

The discussion focused on indirection, inlining limits, and how small async functions may be harder to optimize efficiently.

More broadly, it reignited the Rust community’s debate over whether async Rust feels too costly for performance-sensitive systems.