A management method causing a computer to execute a process, the process comprising:
- executing a grouping process that includes a collection process configured to collect information from each of a plurality of devices based on a history of communication processes executed with another device of the plurality of devices, and store the information in a memory, a specification process configured to specify one or more pairs of a communication source device and a communication destination device in which communication processes of a same type were executed at a same time interval based on a process classification type indicating a type of a communication process between the communication source device and the communication destination device and a time interval in which the communication process is performed, which are included in the information collected in the collection process and a creation process configured to create a group including the one or more pairs;
- and
- outputting display information for displaying information of the devices included in the group created by the grouping process,
- the grouping process is executed a plurality of times with the time interval,
- in the output of the display information, when the grouping process is executed at a first timing, a first group created by the grouping process is compared with a second group created by the grouping process executed at a second timing before the first timing, and
- as the display information, the display information that indicates information of devices included in the first group and difference information for displaying a difference between the first group and the second group are output,
- as the first group, of the groups created by the grouping process executed at the first timing, a group that includes a first device of the plurality of devices and includes most devices is selected, and
- as the second group to be compared with the first group, of the groups created by the grouping process executed at the second timing, a group that includes the first device and includes the most devices is selected.