def METHOD_NAME(self):
    memory_facts = {}
    if not os.access("/proc/meminfo", os.R_OK):
        return memory_facts
    for line in get_file_lines("/proc/meminfo"):
        data = line.split(":", 1)
        key = data[0]
        if key in NetBSDHardware.MEMORY_FACTS:
            val = data[1].strip().split(' ')[0]
            memory_facts["%s_mb" % key.lower()] = int(val) // 1024
    return memory_facts