August 2018
Intermediate to advanced
352 pages
12h 30m
English
Content preview from Docker Cookbook - Second Edition
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Cgroups
Control groups (cgroups) provide resource limitations and accounting for containers. The following quote is from the Linux Kernel documentation:
"Control Groups provide a mechanism for aggregating/partitioning sets of tasks, and all their future children, into hierarchical groups with specialized behaviour."
In simple terms, they can be compared to the ulimit shell command or the setrlimit system call. Instead of setting the resource limit to a single process, cgroups allow you to limit resources to a group of processes.
Control groups are split into different subsystems, such as CPU, CPU sets, memory block I/O, and so on. Each subsystem can be used independently, or can be grouped with others. The features that cgroups provide are ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.