func updateDriveIOStats(currentStats madmin.DiskIOStats, latestStats madmin.DiskIOStats, labels map[string]string) {
	sectorSize := uint64(512)
	kib := float64(1 << 10)
	diffInSeconds := time.Now().UTC().Sub(lastDriveStatsRefresh).Seconds()
	if diffInSeconds == 0 {
		// too soon to update the stats
		return
	}

 */
public class ReferralTest {

    private Referral referral;
    private byte[] testBuffer;

    @BeforeEach
    public void setUp() {
        referral = new Referral();
        testBuffer = new byte[512];
    }

    // Version 3 Referral Tests

    @Test
    public void testDecodeVersion3WithoutNameList() {
        // Prepare test data

            SMBUtil.writeInt8(testTime + 2000, buffer, 24);
            SMBUtil.writeInt8(testTime + 3000, buffer, 32);
            SMBUtil.writeInt8(1024, buffer, 40);
            SMBUtil.writeInt8(512, buffer, 48);
            SMBUtil.writeInt4(0x01, buffer, 56);

            // When
            response.readBytesWireFormat(buffer, 0);

            // Then - use reflection to verify private fields

    /** Maximum buffer size for IO operations */
    protected int maximumBufferSize = 0x10000;
    /** Maximum buffer size for SMB transaction operations */
    protected int transactionBufferSize = 0xFFFF - 512;
    /** Number of buffers to keep in cache */
    protected int bufferCacheSize = 16;
    /** Maximum size for list operations */
    protected int smbListSize = 65435;

        SMBUtil.writeInt4(0, buffer, offset + 60);

        return buffer;
    }

    private byte[] createValidNegotiateResponseBufferWithContexts() {
        byte[] buffer = new byte[512];
        int offset = 0;

        // Structure size (65)
        SMBUtil.writeInt2(65, buffer, offset);

        // Security mode

// [Buffer.ReadFrom]. As long as the [Buffer] has at least MinRead bytes beyond
// what is required to hold the contents of r, [Buffer.ReadFrom] will not grow the
// underlying buffer.
const MinRead = 512

// ReadFrom reads data from r until EOF and appends it to the buffer, growing
// the buffer as needed. The return value n is the number of bytes read. Any

    }

    InetAddress localAddr;
    int localPort;
    UniAddress address;
    Socket socket;
    int port, mid;
    OutputStream out;
    InputStream in;
    byte[] sbuf = new byte[512]; /* small local buffer */
    SmbComBlankResponse key = new SmbComBlankResponse();
    long sessionExpiration = System.currentTimeMillis() + SO_TIMEOUT;
    LinkedList referrals = new LinkedList();

            assertEquals(32, samr.ACB_MNS);
            assertEquals(64, samr.ACB_DOMTRUST);
            assertEquals(128, samr.ACB_WSTRUST);
            assertEquals(256, samr.ACB_SVRTRUST);
            assertEquals(512, samr.ACB_PWNOEXP);
            assertEquals(1024, samr.ACB_AUTOLOCK);
            assertEquals(2048, samr.ACB_ENC_TXT_PWD_ALLOWED);
            assertEquals(4096, samr.ACB_SMARTCARD_REQUIRED);

			testClose{nil},
		},
	}, {
		// The truncated test file was produced using these commands:
		//   dd if=/dev/zero bs=1048576 count=16384 > /tmp/16gig.txt
		//   tar -b 1 -c -f- /tmp/16gig.txt | dd bs=512 count=8 > writer-big.tar
		file: "testdata/writer-big.tar",
		tests: []testFnc{
			testHeader{Header{
				Typeflag: TypeReg,
				Name:     "tmp/16gig.txt",
				Size:     16 << 30,
				Mode:     0640,

  }

  /** Create a sufficiently large header set to overflow INITIAL_MAX_FRAME_SIZE bytes.  */
  private fun largeHeaders(): List<Header> {
    val nameValues = arrayOfNulls<String>(32)
    val chars = CharArray(512)
    var i = 0
    while (i < nameValues.size) {
      Arrays.fill(chars, i.toChar())
      val string = String(chars)
      nameValues[i++] = string
      nameValues[i++] = string
    }