Monitoring writers and readers with plots (series Ids are different for every run)

[KansaiUser]

I have managed to have compile a simple publisher subscriber program with CMake option -DFASTDDS_STATISTICS=ON

I also installed fast-DDS Monitor. After exporting statistics topics with

export FASTDDS_STATISTICS="HISTORY_LATENCY_TOPIC;PUBLICATION_THROUGHPUT_TOPIC;ACKNACK_COUNT_TOPIC;;DISCOVERY_TOPIC;PHYSICAL_DATA_TOPIC;SUBSCRIPTION_THROUGHPUT_TOPIC"

I run the subscriber and publisher and I run the monitor and I could see the Participant_sub and Participant_pub. I also could add a plot of Latency

I have the following questions:

• The main one: Every time I run the publisher and subscriber, new entities appear in the DDS Entities explorer with their datareaders and datawriters with a different ID. This would not be a problem but when I want to make a plot, I have to add series indicating those IDS. The problem is that I don't have those IDs before running the entities. So I can not design the plot I want before running the entities. This implies that I have to design the plots in a hurry after the entities started running. This for a plot is problematic but for several plots becomes impossible and error prone.

How can I prepare the plots I want with the series I want to monitor before I run my application?

Update: It seems that even though the plot's series indicate some ID numbers for readers and writers, when I run them again (and they get different numbers, they still get plotted. Why is this so?

• The monitoring seems to be going well but when I run the program I got an Error (that does not stop the entity though) It says

  2023-05-04 19:49:56.377 [STATISTICS_DOMAIN_PARTICIPANT_Error] Topic   is not a valid statistic topic name/alias -> Function enable_statistics_builtin_datawriters

  What does this mean?

Thanks

[jparisu]

This is a question rather than an issue. I transfer it to discussions.