How to control and adjust Goroutine scheduling using runtime.Gosched()?

The runtime.Gosched() function in Go programming language allows you to manually control and adjust the scheduling of Goroutines.

Here's a step-by-step guide on how to use runtime.Gosched() to control Goroutine scheduling:

Import the "runtime" package at the top of your Go program:

import "runtime"

Use the runtime.Gosched() function at any point within your Goroutine to yield the processor to other Goroutines. This allows other Goroutines to be scheduled and executed. You can place this function call anywhere within the Goroutine as per your scheduling requirements. Here's a sample usage:

func myGoroutine() {
    // Perform some tasks
    
    // Yield the processor to other Goroutines
    runtime.Gosched()
    
    // Perform more tasks
}

By calling runtime.Gosched(), the Goroutine voluntarily suspends its execution, allowing other Goroutines to execute. After the yielding, the suspended Goroutine can be scheduled again for execution when the Go scheduler decides. This provides an opportunity for other Goroutines to execute and for fair sharing of CPU time among them.

It is important to note that although you can nudge the Go scheduler using runtime.Gosched(), you have less control over the specific order of Goroutine execution. The scheduler in Go is designed to automatically handle scheduling for optimal performance.

Additionally, it is worth mentioning that the use of runtime.Gosched() is relatively rare in most Go programs. The Go scheduler is generally efficient in managing Goroutines, and manual intervention is often unnecessary.