Allowable ranges of various characteristics in a system can be efficiently adjusted. An operation management apparatus (100) includes a correlation model storage unit (112) and an analysis unit (103). The correlation model storage unit (112) stores a correlation model which is based on a relation between different metrics among a plurality of metrics in a system. The analysis unit (103), when a new allowable range is set for one metric of the plurality of metrics, extracts and outputs, as a new allowable range for a metric for which an allowable range is to be changed, an allowable range satisfying a predicted variable range of the metric from a plurality of allowable ranges settable for the metric, based on the correlation model.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. An information processing device comprising: a correlation model storage unit which stores a correlation model which is based on a relation between different metrics among a plurality of metrics in a system; and an analysis unit which, when a new allowable range is set for one metric of the plurality of metrics, extracts and outputs, as a new allowable range for a metric for which an allowable range is to be changed, an allowable range satisfying a predicted variable range of the metric from a plurality of allowable ranges settable for the metric, based on the correlation model. 2. The information processing device according to claim 1, wherein the analysis unit extracts a metric of which the predicted variable range exceeds an allowable range being currently set, as the metric for which the allowable range is to be changed, from one or more other metrics among the plurality of metrics. 3. The information processing device according to claim 1, wherein the analysis unit extracts a metric for which another allowable range is settable, the another allowable range being not exceeded by the predicted variable range and smaller than an allowable range being currently set, as the metric for which the allowable range is to be changed, from one or more other metrics among the plurality of metrics. 4. The information processing device according to claim 1, further comprising a control unit which sets the new allowable range for the one metric and the new allowable range for the metric for which the allowable range is to be changed, in the system. 5. The information processing device according to claim 1, wherein the correlation model includes one or more correlation functions between different metrics among the plurality of metrics, and the analysis unit predicts the variable range by calculating, for each of one or more other metrics predictable from the one metric by using the correlation function or a combination of the correlation functions among the plurality of metrics, a value of the other metric relating to the new allowable range of the one metric, based on the correlation model. 6. The information processing device according to claim 5, wherein the analysis unit indicates the one metric and the metric for which the allowable range is to be changed, on a graph representing a correlation between the one metric and the one or more other metrics. 7. An analysis method comprising: extracting, when a new allowable range is set for one metric of a plurality of metrics in a system, as a new allowable range for a metric for which an allowable range is to be changed, an allowable range satisfying a predicted variable range of the metric from a plurality of allowable ranges settable for the metric, based on a correlation model which is based on a relation between different metrics among the plurality of metrics, and outputting the extracted allowable range. 8. The analysis method according to claim 7, wherein a metric of which the predicted variable range exceeds an allowable range being currently set is extracted, as the metric for which the allowable range is to be changed, from one or more other metrics among the plurality of metrics. 9. The analysis method according to claim 7, wherein a metric for which another allowable range is settable is extracted, the another allowable range being not exceeded by the predicted variable range and smaller than an allowable range being currently set, as the metric for which the allowable range is to be changed, from one or more other metrics among the plurality of metrics. 10. The analysis method according to claim 7, further comprising setting the new allowable range for the one metric and the new allowable range for the metric for which the allowable range is to be changed, in the system. 11. The analysis method according to claim 7, wherein the correlation model includes one or more correlation functions between different metrics among the plurality of metrics, and the variable range is predicted by calculating, for each of one or more other metrics predictable from the one metric by using the correlation function or a combination of the correlation functions among the plurality of metrics, a value of the other metric relating to the new allowable range of the one metric, based on the correlation model. 12. The analysis method according to claim 11, further comprising indicating the one metric and the metric for which the allowable range is to be changed, on a graph representing a correlation between the one metric and the one or more other metrics. 13. A non-transitory computer readable storage medium recording thereon a program, causing a computer to perform a method comprising: extracting, when a new allowable range is set for one metric of a plurality of metrics, as a new allowable range for a metric for which an allowable range is to be changed, an allowable range satisfying a predicted variable range of the metric from a plurality of allowable ranges settable for the metric, based on a correlation model which is based on a relation between different metrics among the plurality of metrics in a system, and outputting the extracted allowable range. 14. The non-transitory computer readable storage medium recording thereon the program according to claim 13, wherein a metric of which the predicted variable range exceeds an allowable range being currently set is extracted, as the metric for which the allowable range is to be changed, from one or more other metrics among the plurality of metrics. 15. The non-transitory computer readable storage medium recording thereon the program according to claim 13, wherein a metric for which another allowable range is settable is extracted, the another allowable range being not exceeded by the predicted variable range and smaller than an allowable range being currently set, as the metric for which the allowable range is to be changed, from one or more other metrics among the plurality of metrics. 16. The non-transitory computer readable storage medium recording thereon the program according to claim 13, further comprising setting the new allowable range for the one metric and the new allowable range for the metric for which the allowable range is to be changed, in the system. 17. The non-transitory computer readable storage medium recording thereon the program according to claim 13, wherein the correlation model includes one or more correlation functions between different metrics among the plurality of metrics, and the variable range is predicted by calculating, for each of one or more other metrics predictable from the one metric by using the correlation function or a combination of the correlation functions among the plurality of metrics, a value of the other metric relating to the new allowable range of the one metric, based on the correlation model. 18. The non-transitory computer readable storage medium recording thereon the program according to claim 17, further comprising indicating the one metric and the metric for which the allowable range is to be changed, on a graph representing a correlation between the one metric and the one or more other metrics. 19. An information processing device comprising: a correlation model storage means for storing a correlation model which is based on a relation between different metrics among a plurality of metrics in a system; and an analysis means for, when a new allowable range is set for one metric of the plurality of metrics, extracting and outputting, as a new allowable range for a metric for which an allowable range is to be changed, an allowable range satisfying a predicted variable range of the metric from a plurality of allowable ranges settable for the metric, based on the correlation model.