In this, our second chapter on the Linux kernel CPU scheduler, we continue our coverage from the previous chapter. In the preceding chapter, we covered several key areas regarding the workings (and visualization) of the CPU scheduler on the Linux OS. This included topics on what exactly the KSE on Linux is, the POSIX scheduling policies that Linux implements, using perf to see the scheduler flow, and how the design of the modern scheduler is based upon modular scheduling classes. We also covered how to query any thread's scheduling policy and priority (using a couple of command line utilities), and delved deeper into the internal workings of the OS scheduler.
With this background in place, we're now ready to explore more on the CPU scheduler on Linux; in this chapter, we shall cover the following areas:
- Visualizing the flow with...
