Does the operating system scheduler necessarily forcibly suspend the execution of a goroutine?

No, the operating system scheduler does not necessarily forcibly suspend the execution of goroutines in Go. Goroutines are lightweight threads managed by the Go runtime, not directly by the OS.

The Go runtime independently schedules the execution of goroutines on system threads (M:N scheduling). Goroutines can be suspended and resumed in the following cases:

• When a goroutine is waiting for I/O or blocks on synchronization.
• When a goroutine explicitly yields control (for example, by calling runtime.Gosched()).
• When load balancing between threads is necessary.

Thus, switching between goroutines occurs cooperatively and under the control of the Go runtime, not forcibly by the OS.