exhaust.go

package main

import (
	"fmt"
	"runtime"
	"time"
)

func main() {
	go tick()
	count := 1
	for {
		go spin()

		fmt.Printf("Started task %v\n", count)
		time.Sleep(2 * time.Second)
		count++
	}
	runtime.Goexit()
}

func tick() {
	i := 0
	for {
		fmt.Printf("Tick %v\n", i)
		time.Sleep(1 * time.Second)
		i++
	}
}

func spin() {
	i := 0
	for {
		i++
		// runtime.Gosched() // yield...
	}
}

see how the scheduler threads are exhausted

to give up control gracefully

		if i%1000000000 == 0 {
			fmt.Printf("Task: %v\n", id)
		}

seems not to be the case anymore: go1.14.3

...
Started task 50
Tick 97
Tick 98
Started task 51
Tick 99
Tick 100
Started task 52
Tick 101
Tick 102
Started task 53
Tick 103
Tick 104
Started task 54
Tick 105
Tick 106
Started task 55
Tick 107
Tick 108
Started task 56
Tick 109