Go Scheduler: From Humble Beginnings to a Powerful Engine

This blog post delves into the evolution of Go's scheduler, tracing its journey from an inefficient single global run queue to the highly performant GMP model (Goroutine, Machine, Processor). It details the roles and mechanisms of each component in the GMP model, including goroutine creation, preemption, system call handling, and the role of netpoll in network and file I/O. Cooperative and non-cooperative preemption mechanisms are explained. By dissecting the Go runtime source code, readers gain a deeper understanding of Go's concurrency model, enabling them to write more efficient concurrent programs.