node.py 文件源码

def bandwidth(self, alpha=1.0, beta=0.5, bandwidth_max=100000):
        """Completely make-believe bandwith.  It's calculated as a random point
        on the probability density function of a gamma distribution over
        (0,100000] in KB/s.
        """
        if not self._bandwidth:
            self._bandwidth = \
                int(floor(random.gammavariate(alpha, beta) * bandwidth_max))
        return self._bandwidth