This paper is focused on the technique for de si gn and realization of the process communications about the computer-aided train diagram network system. The Windows Socket technique is adopted to program for the cli...This paper is focused on the technique for de si gn and realization of the process communications about the computer-aided train diagram network system. The Windows Socket technique is adopted to program for the client and the server to create system applications and solve the problems o f data transfer and data sharing in the system.展开更多
This paper describes the RTSS simulation-based performance evaluation method during the upgrade of the HT-7 data processing system to a distributed environment. We present the main concepts and steps of the method. Qu...This paper describes the RTSS simulation-based performance evaluation method during the upgrade of the HT-7 data processing system to a distributed environment. We present the main concepts and steps of the method. Queueing modeling and steady-state operational analysis techniques are also used for analytic modeling. Both simulation and analysis studies on the HT-7 data processing system indicate that in comparison with conventional time-shared systems,a client/server system can significantly reduce the completion time of raw data display,real-time data processing and data transfer in the online system,raise the workload capacity and reduce the average waiting time of the off-line system.展开更多
A Macovo queuing network (MQN) based model of a general client/server system with multitype serversand with consideration of the transfer time of the computer network is proposed. The MQN was solved by analyzinga gene...A Macovo queuing network (MQN) based model of a general client/server system with multitype serversand with consideration of the transfer time of the computer network is proposed. The MQN was solved by analyzinga general open MQN with limited clients. In addition, the steady-state probability distribution theorem was proven.Thus, analytical load indices such as queue length at the servers and the server efficiency were obtained. Moreover,the sufficient and necessary conditions for server load balance were found. Finally, a client/server system was analyzed to illustrate the procedure for computing system load indices. The results are not only helpful for analyzing bottlenecks in the client/server system, but are also fundamental to static system configuration design.展开更多
文摘This paper is focused on the technique for de si gn and realization of the process communications about the computer-aided train diagram network system. The Windows Socket technique is adopted to program for the client and the server to create system applications and solve the problems o f data transfer and data sharing in the system.
文摘This paper describes the RTSS simulation-based performance evaluation method during the upgrade of the HT-7 data processing system to a distributed environment. We present the main concepts and steps of the method. Queueing modeling and steady-state operational analysis techniques are also used for analytic modeling. Both simulation and analysis studies on the HT-7 data processing system indicate that in comparison with conventional time-shared systems,a client/server system can significantly reduce the completion time of raw data display,real-time data processing and data transfer in the online system,raise the workload capacity and reduce the average waiting time of the off-line system.
文摘A Macovo queuing network (MQN) based model of a general client/server system with multitype serversand with consideration of the transfer time of the computer network is proposed. The MQN was solved by analyzinga general open MQN with limited clients. In addition, the steady-state probability distribution theorem was proven.Thus, analytical load indices such as queue length at the servers and the server efficiency were obtained. Moreover,the sufficient and necessary conditions for server load balance were found. Finally, a client/server system was analyzed to illustrate the procedure for computing system load indices. The results are not only helpful for analyzing bottlenecks in the client/server system, but are also fundamental to static system configuration design.
