Are there ways to influence the behavior of the system scheduler?

In Go, there are several ways to influence the behavior of the system scheduler, which manages goroutines:

• runtime.GOMAXPROCS(n int) — sets the maximum number of OS threads that can execute goroutines simultaneously. Changing this value affects parallelism.

• runtime.Gosched() — allows the current goroutine to yield the processor to other goroutines, invoking the scheduler.

• time.Sleep() — can be used to temporarily suspend a goroutine, allowing other goroutines to run.

• sync primitives (mutex, channel) — influence synchronization and blocking of goroutines, indirectly affecting scheduling.

Example of using GOMAXPROCS:

package main

import (
    "fmt"
    "runtime"
)

func main() {
    fmt.Println("Default GOMAXPROCS:", runtime.GOMAXPROCS(0))
    runtime.GOMAXPROCS(2) // Set to 2 threads
    fmt.Println("Updated GOMAXPROCS:", runtime.GOMAXPROCS(0))
}

Thus, through the standard runtime package, you can manage the scheduler's behavior in Go.