def METHOD_NAME(self):
    measurements = {"reads_issued": 3, "ms_spent_reading": 6, "writes_completed": 7, "ms_spent_writing": 10, "ios_in_progress": 11, "ms_spent_doing_io": 12, "weighted_ms_spent_doing_io": 13}
    now = int(time())
    raw_data = self.read_file("/proc/diskstats")
    prepared_data = []
    for line in raw_data:
        values = line.split()
        values[0] = "disk." + values[2]
        prepared_data.append(values)
    return self.delta_analyzer(measurements, prepared_data, now)