systemd forked process are different cgroup

In systemd, a forked process is a child process created by a parent process using the fork system call. When a process is forked, a new process is created that is an exact copy of the parent process, except for a few differences such as the process ID.

In systemd, each forked process is placed in its own cgroup. A cgroup, short for control group, is a Linux kernel feature that allows the allocation of resources and setting of limits for a group of processes. By placing forked processes in separate cgroups, systemd can manage and control the resource usage of each process individually.

This separation of forked processes into different cgroups allows systemd to implement its features such as resource management, process supervision, and service control more effectively. It enables systemd to apply resource limits, track and manage the lifecycle of each process, and perform actions such as restarting or stopping specific processes within a service unit.