Summary
In this chapter, we looked at the history of the cgroups technology, what cgroups are, and why we need them. We then looked at the structure of cgroups and the cgroup filesystem.
A major challenge that comes with learning about cgroup technology is that there isn't much available documentation about it. I mean, you'll see a lot of blog posts and YouTube videos about it, but much of it either isn't very comprehensive or is woefully out of date. Hopefully, I've been able to give you a better understanding of cgroup technology and how it works together with systemd.
In the next chapter, we'll look at controlling resource usage with cgroups Version 1. I'll see you there.
