Reported frequency of messages changes when bag is paused

[peci1]

When playing a bag with rosbag_fancy play --clock and /use_sim_time set to true, when I pause the bag, the frequency goes slowly down. This should not happen IMO as the interesting thing is sim-time frequency of messages and not real-time frequency.

[xqms]

That is true - if I remember correctly, all displayed rates are based on wall time, not ROS time. Back then I designed the system for recording, not playback. In that case it seemed more relevant to report "real" frequencies, and, more importantly, bandwidths for analysis of the recording situation.

I guess especially in the playback situation ros::Time is more applicable.

I don't have the bandwidth to work on this in the near time. But PRs are welcome!