Work Stealing

External

• "Concurrency in Go" by Katherine Cox-Buday, Chapter 6. Goroutines and the Go Runtime

Internal

• Job Scheduling
• The Job Scheduling Problem
• Go Runtime

Overview

The work stealing goroutine scheduling follows the following basic rules:

1. At a fork point, add tasks to the tail of the duque associated with the thread.
2. If the thread is idle, steal work from the head of deque associated with some other random thread.
3. At a join point that cannot be realized (for example, the goroutine it is synchronized with has not completed yet), pop work off the tail of the thread's own duque.
4. If the thread's deque is empty, either stall at a join or steal work from the head of a random thread's associated duque.