Please provide the correct mailing list if this is inappropriate for 'linux-doc'. I can find no way to access the current active processes/tasks for a given UID from user space. That's from any of the following: /proc filesystem /sys filesystem API call Is there any documented mechanism for retrieving this without having to manually count all active tasks a given UID is running? Essentially, looking to get the same data present in user_struct for number of active tasks. This is for evaluating a processes current ULIMIT for NPROC against the actual active number of running tasks for a given UID Scott Fields Kyndryl