| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To calculate a processing time excluding the lock standby time of a transaction for achieving target performance when it is necessary to lock two records for one transaction. <P>SOLUTION: In a processing time calculation device 10, a competition requirement acquisition part 11 acquires a rate Ra of a transaction for updating a record A and a rate Rb of a transaction for updating a record B and a rate Rab of a transaction for updating the records A and B, and a performance requirement acquisition part 14 acquires a transaction response time Tresp, and a first analysis part 15 applies the first stage of an M/M/1 model to the record A, and calculates a lock holding time Tsa of the record A from Ra and Tresp, and a second analysis part 17 applies the second stage of M/M/1 to the record B, and calculates a lock holding time Tsb of the record B from Rb, Rab, and Tsa. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
