def timing(self, stat, delta, rate=1):
        """
        Send new timing information.

        `delta` can be either a number of milliseconds or a timedelta.
        """
        if isinstance(delta, timedelta):
            # Convert timedelta to number of milliseconds.
            delta = delta.total_seconds() * 1000.
        self._send_stat(stat, '%0.6f|ms' % delta, rate)
Send new timing information.

        `delta` can be either a number of milliseconds or a timedelta.