| 摘要 |
PROBLEM TO BE SOLVED: To improve response performance as a whole, that is, to reduce the average and the dispersion of response time by dynamically balancing the loads of respective computers in a system constituted of a terminal group for generating a transaction processing request and a plurality of computers for performing the request processing of a load sharing type the computers are symmetrical multi-processors and the number of EPU constituting them can be varied). SOLUTION: The number of transactions during the processing of the respective computers and the number of processes staying in an EPU system are measured for each specified period. The precise present number of the transactions during processing is always grasped and the extension rate of the processing time of the respective computers is estimated on the basis of the measurement values and the number of EPUs (73). The value of a load index is obtained on the basis of the estimated extension rate and the number of EPUs (74). The transaction is distributed to computers of low load (75 and 76). Dynamic distribution considering the characteristic of job mixing during performance on the computers is realized, and response performance can be improved.
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