UCloud Tech

Oct 25, 2018 · Backend Development

Why Go 1.8’s ForkLock Can Hang Goroutines and How Go 1.9 Solves It

The article investigates a Go 1.8.3 issue where goroutines block on ForkLock during fork‑exec, analyzes the kernel and Go runtime behavior, presents a hypothesis about memory‑heavy processes, validates it with experiments, and shows that upgrading to Go 1.9 or later eliminates the problem.