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Did you specify the topic you want to record? The command shown in your question rosbag record -a will record ALL the topics present in your environment.

Regarding your questions: 1. No, this is not normal. We have robots fully functional while recording topics which amount to as much as 1700KB/sec. 2. Yes, it could help, but I really doubt that you need it with a topic as small as 200KB/sec. I believe you should try to find what is going on with more details and I would be that you are recording much more topics than needed.

What is the size and content of a recorded bag (rosbag info foo.bag) ?

Did you specify the topic you want to record? The command shown in your question rosbag record -a will record ALL the topics present in your environment.

Regarding your questions: 1. questions:

  1. No, this is not normal. We have robots fully functional while recording topics which amount to as much as 1700KB/sec. 2. 1700KB/sec.

  2. Yes, it could help, but I really doubt that you need it with a topic as small as 200KB/sec. I believe you should try to find what is going on with more details and I would be that you are recording much more topics than needed.

What is the size and content of a recorded bag (rosbag info foo.bag) ?