In this paper we propose a performance measurement and queueing analysis for medium-high blocking probability where the service rate is less than equal to the arrival rate of parallel connection servers, and for which we can estimate the system response time. First, we calculate the system response time of the parallel connection servers. Second, we simulate the queueing model of the parallel connection servers and derive the system response time. Third, we measure the system response time by

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... ing different numbers of ASP multiplication loops to represent the different service rates of the parallel connection servers. Fourth, we compare the simulation and measurement results with the medium-high blocking probability of the parallel connection from the different service rates of the servers. Fifth, we compare the system response time of both multi-parallel connection servers and a single server.