hud

Measures scheduling latency as a symptom of blocking, not the direct cause, which can lead to false positives from system CPU pressure or misleading stack traces from victim tasks, as admitted in the limitations.

Requires debug symbols in the target binary, which adds 10-20% to binary size and slight runtime overhead, making it impractical for some production deployments without temporary swaps.

Only works on Linux 5.8+ with root privileges, excluding macOS, Windows, and environments without elevated access, limiting cross-platform or secure use cases.

Specifically designed for Tokio 1.x runtimes with worker detection heuristics, not compatible with other async runtimes or older Tokio versions, as noted in the limitations.