| 摘要 |
PROBLEM TO BE SOLVED: To support the performance evaluation of a storage.SOLUTION: Multiplicity is defined as the average of the number of overlapped processing time zones of I/O processing per one second. In this case, for example, the multiplicity is calculated by the following equation: multiplicity=average IOPS×average response time. The multiplicity indicates a degree of the overlapped processing time zones in a case where each I/O request is processed in parallel. In other words, the multiplicity expresses the length of a queue that stores I/O requests. Therefore, larger multiplicity means that load for a storage apparatus is accumulating and the multiplicity is a good indicator to evaluate the performance of a storage apparatus. |
