The eProsima Fast DDS Statistics Backend keeps track of the entities discovered in the DDS layout. The following list shows the different entities that are tracked:
HOST: The host or machine where a participant is allocated.
USER: The user that has executed a participant.
PROCESS: The process where the participant is running.
DOMAIN: Abstract DDS network by Domain or by Discovery Server.
TOPIC: DDS Topic.
PARTICIPANT: DDS Domain Participant.
DATAWRITER: DDS DataWriter.
DATAREADER: DDS DataReader.
LOCATOR: Physical locator that a communication is using.