Systemd CGroup system.slice: Managing System Core Processes with Control Groups

Systemd CGroup 'system.slice' is a unit slice in the systemd init system used to group system services and processes essential for core system functionality.

Control Groups (CGroups), a Linux kernel feature, allow for resource management and process isolation. They enable allocating and limiting resources like CPU, memory, and disk I/O.

The 'system.slice' unit, created by systemd, provides a framework for managing and organizing system services and processes. It typically groups essential services like the init process, kernel-related services, and other critical processes needed for proper system operation.

By grouping these processes within 'system.slice', systemd can apply resource limits and control policies to the entire group, prioritizing and managing the system's core functionality.

The systemd CGroup 'system.slice' provides a method for organizing and managing vital system services and processes through CGroups, enabling more efficient and flexible resource allocation and control.