}
}

func loadProcIOMetrics(ctx context.Context, io procfs.ProcIO, m MetricValues) {
	if io.RChar > 0 {
		m.Set(processIORCharBytes, float64(io.RChar))
	}

	if io.ReadBytes > 0 {
		m.Set(processIOReadBytes, float64(io.ReadBytes))
	}

	if io.WChar > 0 {
		m.Set(processIOWCharBytes, float64(io.WChar))
	}

	if io.WriteBytes > 0 {
		m.Set(processIOWriteBytes, float64(io.WriteBytes))
	}

| `minio_node_io_read_bytes`                 | Total bytes read by the process from the underlying storage system, /proc/[pid]/io read_bytes.                  |
| `minio_node_io_wchar_bytes`                | Total bytes written by the process to the underlying storage system including page cache, /proc/[pid]/io wchar. |

| `minio_system_process_io_read_bytes`               | Total bytes read by the process from the underlying storage system, /proc/[pid]/io read_bytes. <br><br>Type: counter                  | `server` |

	proxiedDeleteTaggingRequestFailures MetricName = "proxied_delete_tagging_requests_failures"

	freeBytes       MetricName = "free_bytes"
	readBytes       MetricName = "read_bytes"
	rcharBytes      MetricName = "rchar_bytes"
	receivedBytes   MetricName = "received_bytes"
	latencyMilliSec MetricName = "latency_ms"
	sentBytes       MetricName = "sent_bytes"

			n, err := rb.Read(buf[:readRng.Intn(len(buf))])
			readBytes += n
			read.Write(buf[:n])
			debugln("READ 1\t", n, readBytes)
			if err != nil {
				readErr = err
				break
			}

			// ReadByte
			b, err := rb.ReadByte()
			if err != nil {
				readErr = err
				break
			}
			readBytes++
			read.Write([]byte{b})
			debugln("READ 2\t", 1, readBytes)

			// TryRead

	}

	// after successful read
	if _, err := b.ReadBytes('m'); err != nil {
		t.Fatalf("ReadBytes: %v", err)
	}
	if err := b.UnreadByte(); err != nil {
		t.Fatalf("UnreadByte: %v", err)
	}
	c, err := b.ReadByte()
	if err != nil {
		t.Fatalf("ReadByte: %v", err)
	}
	if c != 'm' {
		t.Errorf("ReadByte = %q; want %q", c, 'm')
	}
}

	if r.current.name, err = r.mr.ReadString(); err != nil {
		if err == io.EOF {
			err = io.ErrUnexpectedEOF
		}
		r.err = err
		return metaCacheEntry{}, err
	}
	r.current.metadata, err = r.mr.ReadBytes(r.current.metadata[:0])
	if err == io.EOF {
		err = io.ErrUnexpectedEOF
	}
	r.err = err
	return r.current, err
}

// next will read one entry from the stream.

	}
	// Test error after ReadByte.
	_, _, err = r.ReadRune() // reset state
	if err != nil {
		t.Error("unexpected error on ReadRune (2):", err)
	}
	for range buf {
		_, err = r.ReadByte()
		if err != nil {
			t.Error("unexpected error on ReadByte (2):", err)
		}
	}
	if r.UnreadRune() == nil {
		t.Error("expected error after ReadByte")
	}
	// Test error after UnreadByte.

	if b.off > 0 {
		b.off--
	}
	return nil
}

// ReadBytes reads until the first occurrence of delim in the input,
// returning a slice containing the data up to and including the delimiter.
// If ReadBytes encounters an error before finding a delimiter,
// it returns the data read before the error and the error itself (often [io.EOF]).
// ReadBytes returns err != nil if and only if the returned data does not end in
// delim.

    try {
      byte[] readBytes = ByteStreams.toByteArray(in);
      assertExpectedBytes(readBytes);
    } finally {
      in.close();
    }
  }

  public void testOpenBufferedStream() throws IOException {
    InputStream in = source.openBufferedStream();
    try {
      byte[] readBytes = ByteStreams.toByteArray(in);
      assertExpectedBytes(readBytes);
    } finally {
      in.close();