Data collection method and related device

A data collection device, comprising:

• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing instructions, which when executed by the at least one processor, cause the data collection device to:
• collect performance indicator data of a target device based on a collection periodicity;
• detect a change amplitude of the collected performance indicator data that is within a change detection window, wherein the change detection window comprises multiple collection periodicities;
• and
• in response to detecting that the change amplitude of the performance indicator data within the change detection window is greater than or equal to a change detection threshold, send the performance indicator data that is within the change detection window to a data analysis device.

A data analysis device, comprising:

• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing instructions, which when executed by the at least one processor, cause the data collection device to:
• send a first configuration message to a data collection device, wherein the first configuration message comprises a duration of a change detection window and a change detection threshold, the duration of the change detection window and the change detection threshold are used by the data collection device to detect a value relationship between the change detection threshold and change amplitude of performance indicator data of a target device in the change detection window;
• and
• receive the performance indicator data that is sent by the data collection device, that is in the change detection window, and that exceeds the change detection threshold.