Questions tagged [qos]

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Under what circumstances should I use QoS SensorData / Best Effort?

I found these links addressing the intention and the design of the QoS policies: https://design.ros2.org/articles/qos.html https://docs.ros.org/en/rolling/Concepts/Intermediate/About-Quality-of-...
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How to query Quality of Service (QoS) Parameters of a ROS 2 Service from Command line

I know how to list ROS 2 services using the following command: ros2 service list I also know that we can display the QoS properties of a ROS 2 topic using the ...
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issue rqt with ros2 qos custom proflie

when topic is subscribed in ros2 rqt it shows unknown when topic has default qos profile it works but when qos profile is changed it shows unknown again is there any way to set custom qos profile in ...
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Issues with Interactive Waypoint Follower in ROS2 Galactic Navigation2 GPS Waypoint Follower Tutorial

I'm working through the ROS2 Galactic Navigation2 GPS Waypoint Follower tutorial and have encountered a couple of issues that I'm struggling to resolve. QoS Incompatibility: The GPS plugin (...
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How to set/change QoS deadline for a publisher node during/before runtime

There is an active topic "/control/drive_inputs" that I'm trying to publish to using ...
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Unexpected QoS Behavior in Isolated GoogleTest: `endpoint_qos.depth` mismatch

I have been trying to test some code using an isolated gtest (ament_add_ros_isolated_gtest) that checks the QoS profile used to create a publisher with that ...
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Behavior of 'reliable' publisher in case of unreachable subscriber

Consider a ROS 2 publisher with QoS 'reliable' and a few subscribers. Suddenly one of the subscribers can no longer be reached (e.g. it is running on a different system and the network cable is pulled ...