Hi
Is it possible for more then one ros node to subscribe to the same topic. If yes then what's the maximum number of nodes one ros topic can handle?
Originally posted by muscles on ROS Answers with karma: 11 on 2016-05-17
Post score: 0
1 Answer
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Yes, it is possible for many ROS nodes to subscribe to one topic.
I don't believe there is a hard upper limit to the number of subscribers; the limit will mostly come from the performance of the computer. As a rough guess, I think it should be possible to have over 100 subscribers on a single topic; possibly many times that.
I'm not sure any testing has been done to validate the maximum number of subscribers or the performance impact of having very many subscribers. If you want to have lots (>100) of subscribers, you should write a simple test and validate that the publisher and subscriber work well in a scenario that is representative of your use case.
Originally posted by ahendrix with karma: 47576 on 2016-05-17
This answer was ACCEPTED on the original site
Post score: 2