Control groups, or cgroups, is a kernel feature designed to aggregate tasks to allow for hierarchical resource management and allocation. While control groups have been in the Linux kernel for a few years, their implementation in CentOS appears for the first time in the recently released version 6. Here’s how you can take advantage of control groups to improve your systems’ efficiency. In cgroups terminology, every system resource – CPU, memory, disk input/output, bandwidth – is called a subsystem or resource controller.
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