| 摘要 |
PROBLEM TO BE SOLVED: To monitor performance by using a threshold of a proper value set based on the past operating state of a computer system. SOLUTION: A performance value collecting means 12 collects the performance value of a monitoring object device 4 at each monitoring interval. When a threshold changing flag is ON, the performance value is stored in a performance value storing part 31 in a sampling time. A threshold calculating means 13 obtains the average at each threshold interval of the performance value stored in the part 31 and multiplies the range of the threshold by the average to calculate the threshold to store it in a threshold storing part 33. In the case where the threshold exceeds the threshold of an upper limit stored in an upper limit threshold storing part 32, it is replaced with the threshold of the upper limit. A performance judging means 14 compares the performance stored in the part 31 with the threshold stored in the part 33 to judge whether a performance problem is generated in the device 4 and outputs the result of judging to an input and output device 2.
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