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Unless you're forcing these topics to be "passed" (are you using a multimaster setup?) no traffic should be generated unless there are actual subscribers. No subscribers -> no data transfer.

You'll have to provide more information about what it is exactly you are doing, as right now, this is unanswerable (and should actually not even be a problem).

Unless you're forcing these topics to be "passed" (are you using a multimaster setup?) no traffic should be generated unless there are actual subscribers. No subscribers -> no data transfer.

You'll have to provide more information about what it is exactly you are doing, as right now, this is unanswerable (and should actually not even be a problem).


Edit: this topic comes up every now and then. For (future) readers: if there are no subscribers to a topic, no data is being transferred. It doesn't matter whether that is on the same machine, one the same network, on another network or to the other side of the world.

Unless you're forcing these topics to be "passed" (are you using a multimaster setup?) no traffic should be generated unless there are actual subscribers. No subscribers -> no data transfer.

You'll have to provide more information about what it is exactly you are doing, as right now, this is unanswerable (and should actually not even be a problem).

As to your screenshot: the Topic Monitor actually subscribes to topics to calculate bandwidth and rate. So that would immediately mean you create a subscriber. Same as rostopic hz and rostopic bw.


Edit: this topic comes up every now and then. For (future) readers: if there are no subscribers to a topic, no data is being transferred. It doesn't matter whether that is on the same machine, one the same network, on another network or to the other side of the world.

Unless you're forcing these topics to be "passed" (are you using a multimaster setup?) no traffic should be generated unless there are actual subscribers. No subscribers -> no data transfer.

You'll have to provide more information about what it is exactly you are doing, as right now, this is unanswerable (and should actually not even be a problem).

As to your screenshot: the Topic Monitor actually subscribes to topics to calculate bandwidth and rate. So that would immediately mean you create a subscriber. Same as rostopic hz and rostopic bw.


Edit: this topic comes up every now and then. For (future) readers: if there are no subscribers to a topic, no data is being transferred. It doesn't matter whether that is on the same machine, one on the same network, on another network or to the other side of the world.