err = en.WriteFloat64(z.Peak)
	if err != nil {
		err = msgp.WrapError(err, "Peak")
		return
	}
	// write "n"
	err = en.Append(0xa1, 0x6e)
	if err != nil {
		return
	}
	err = en.WriteInt64(z.N)
	if err != nil {
		err = msgp.WrapError(err, "N")
		return
	}
	return
}

// MarshalMsg implements msgp.Marshaler
func (z *XferStats) MarshalMsg(b []byte) (o []byte, err error) {

	if err != nil {
		err = msgp.WrapError(err, "XLV1")
		return
	}
	err = en.WriteTime(z.ModTime)
	if err != nil {
		err = msgp.WrapError(err, "ModTime")
		return
	}
	err = en.WriteInt64(z.Size)
	if err != nil {
		err = msgp.WrapError(err, "Size")
		return
	}
	err = en.WriteUint32(z.Mode)
	if err != nil {
		err = msgp.WrapError(err, "Mode")
		return
	}

		if err != nil {
			err = msgp.WrapError(err, "Children")
			return
		}
		// write "sz"
		err = en.Append(0xa2, 0x73, 0x7a)
		if err != nil {
			return
		}
		err = en.WriteInt64(z.Size)
		if err != nil {
			err = msgp.WrapError(err, "Size")
			return
		}
		// write "os"
		err = en.Append(0xa2, 0x6f, 0x73)
		if err != nil {
			return
		}