def read_pid_stat(pid='self'):
    """
    Returns system process stat information.

    :param pid: The process ID.
    :returns: The system stat information.
    :rtype: dict
    """
    with open('/proc/%s/stat' % (pid,), 'rb') as f:
        stat = f.readline().split()
    return {'utime': int(stat[13]), 'stime': int(stat[14]), 'cutime': int(
        stat[15]), 'cstime': int(stat[16])}
