we suggest some parameters to evaluate the performance of various PMTU discovery methods
such as the precision
the consuming time
and the number of packages to be sent
etc.And we also suggest a new efficient and agile method called Hierarchical-Test based Empiristic-data to detect the PMTU.Then we elaborately discuss the quantitative analyses method of the algorithm.Meanwhile
we have realized the algorithm under Linux operating system environment
and have done some real-world tests based on 58 websites given stochastically within the Education and Research Network of China.Finally
we further analyze the performance of the method through these data that we have attained by experiment.