sysfscgroupmygrouppidsmax
sysfscgroupmygrouppidsmax is a kernel parameter related to the cgroup (control group) subsystem in Linux. It controls the maximum number of PIDs (process IDs) that can be associated with a specific cgroup. When a cgroup reaches this limit, new processes attempting to join that cgroup will be denied. This parameter is typically found within the `/sys/fs/cgroup/<controller>/mygroup/pids.max` file, where `<controller>` refers to the cgroup subsystem being used (e.g., `cpu`, `memory`). Setting this value to a positive integer enforces a hard limit on the number of processes within that group. A value of `max` or a sufficiently large number effectively disables the limit. This mechanism is useful for resource management and preventing runaway processes from consuming all available PIDs on a system. It allows administrators to isolate and control the process count for specific applications or groups of users.