Data acquisition device, data acquisition method and storage medium

A data acquisition device comprising:

• a memory that stores an object that is a unit obtained by sectioning received data by a certain size, the object including a plurality of sessions;
• and
• a processor coupled to the memory and configured to:
• calculate a value related to an acquisition time for each of a plurality of data acquisition methods that include a first method that acquires the data in a unit of the session and a second method that acquires the data in a unit of the object,
• determine the data acquisition method based on the value related to the calculated acquisition time,
• perform the data acquisition with the determined data acquisition method,
• periodically acquire the data with the data acquisition method other than the determined data acquisition method,
• update the value related to the acquisition time, and
• determine the data acquisition method based on the value related to the acquisition time.

A data acquisition method performed by a processor of a data acquisition device, the data acquisition method comprising:

• storing an object that is a unit obtained by sectioning received data by a certain size, the object including a plurality of sessions;
• calculating a value related to an acquisition time for each of a plurality of data acquisition methods that include a first method that acquires the data in a unit of the session and a second method that acquires the data in a unit of the object;
• determining the data acquisition method based on the value related to the calculated acquisition time;
• performing the data acquisition with the determined data acquisition method;
• periodically acquiring the data with the data acquisition method other than the determined data acquisition method;
• updating the value related to the acquisition time;
• and
• determining the data acquisition method based on the value related to the acquisition time.