How does the CPU core manage and interact with goroutines in the system?

The CPU core does not directly control goroutines in Go. Goroutines are lightweight threads managed by the Go runtime, not the OS kernel. The Go runtime contains a scheduler that maps many goroutines onto fewer system threads. This scheduler operates in user space and distributes goroutine execution across available threads, while the CPU kernel executes system threads on which goroutines run. This allows efficient resource utilization and quick context switching between goroutines without kernel-level overhead.

For example, the Go runtime launches several goroutines, scheduling their execution on multiple system threads, and the CPU kernel switches these threads according to standard scheduling algorithms.