percUtil       MetricName = "perc_util"
	usedInodes     MetricName = "used_inodes"

	// network stats
	interfaceRxBytes  MetricName = "rx_bytes"
	interfaceRxErrors MetricName = "rx_errors"
	interfaceTxBytes  MetricName = "tx_bytes"
	interfaceTxErrors MetricName = "tx_errors"

	// cpu stats
	cpuUser       MetricName = "user"
	cpuSystem     MetricName = "system"
	cpuIOWait     MetricName = "iowait"

        long _0_bytes = 0L;
        assertEquals("0 B", format.format(_0_bytes));
        assertEquals("0 B", format.format(_0_bytes, ScaleUnit.BYTE));
        assertEquals("0 kB", format.format(_0_bytes, ScaleUnit.KILOBYTE));
        assertEquals("0 MB", format.format(_0_bytes, ScaleUnit.MEGABYTE));
        assertEquals("0 GB", format.format(_0_bytes, ScaleUnit.GIGABYTE));

        long _5_bytes = 5L;

	return
}

// ToTimestamp returns the timestamp value if present.
func (v Value) ToTimestamp() (t time.Time, ok bool) {
	t, ok = v.value.(time.Time)
	return
}

// ToBytes returns the value if byte-slice.
func (v Value) ToBytes() (val []byte, ok bool) {
	val, ok = v.value.([]byte)
	return
}

// ToArray returns the value if it is a slice of values.
func (v Value) ToArray() (val []Value, ok bool) {

	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}
	tgtBytes, err := json.Marshal(&targets)
	if err != nil {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErrWithErr(ErrAdminConfigBadJSON, err), r.URL)
		return
	}
	if _, err = globalBucketMetadataSys.Update(ctx, bucket, bucketTargetsFile, tgtBytes); err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	if err != nil {
		writeErrorResponseJSON(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}
	tgtBytes, err := json.Marshal(&targets)
	if err != nil {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErrWithErr(ErrAdminConfigBadJSON, err), r.URL)
		return
	}
	if _, err = globalBucketMetadataSys.Update(ctx, bucket, bucketTargetsFile, tgtBytes); err != nil {
		writeErrorResponseJSON(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	x := []byte{'x'}
	y := []byte{'y'}
	tmp := make([]byte, 72)
	for _, growLen := range []int{0, 100, 1000, 10000, 100000} {
		for _, startLen := range []int{0, 100, 1000, 10000, 100000} {
			xBytes := Repeat(x, startLen)

			buf := NewBuffer(xBytes)
			// If we read, this affects buf.off, which is good to test.
			readBytes, _ := buf.Read(tmp)
			yBytes := Repeat(y, growLen)
			allocs := testing.AllocsPerRun(100, func() {