The problem in ros2 for big data [closed]

asked 2018-03-15 21:01:23 -0600

Dragon gravatar image

updated 2018-03-16 04:32:41 -0600

I publish the 1MB data with 10Hz in a topic on ROS2. But I can get the data through ros2 topic echo /topic. Someone know about this?

My test situation is below: one publisher: Message data size is 1MB, Message rate is 10Hz one subscriber topic name is /topic

Now I run the command ros2 run eval_test talker in one terminal and another command ros2 run eval_test listener in another terminal. But I can not get the data from listener subscriber.

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Closed for the following reason Question does not follow our guidelines for questions. Please see: for more details. by tfoote
close date 2018-12-14 19:21:16.802241



There's not enough information in this question to understand what you're asking. Please provide enough information to understand and reproduce your situation. Include specifics about the versions of things installed. and exactly what you're running.

tfoote gravatar imagetfoote ( 2018-03-15 21:07:32 -0600 )edit

You can find guidelines for asking questions at: as well as in the question prompt.

tfoote gravatar imagetfoote ( 2018-03-15 21:07:54 -0600 )edit

I add some information.

Dragon gravatar imageDragon ( 2018-03-16 04:33:01 -0600 )edit

Is eval_test your code? If so can you share it? 1MB at 10Hz is on par with a moderately slow frame rate camera so isn't particularly large data. It's important to include which rmw implementation you're using what version of ROS2, enough that we can reproduce your problem to be able to help you.

tfoote gravatar imagetfoote ( 2018-03-16 14:02:12 -0600 )edit