[ros-users] topic queue
verbeek at servicerobotics.eu
Thu May 5 07:16:14 UTC 2011
Actually I am doing ROS_INFO_STREAM in one node three times. With
rostopic echo /rosout_agg I see all three messages. With my subscriber I
only see the last message, when calling spinOnce not fast enough. So
this can not be an issue of the queue filling up.
Am 04.05.2011 20:06, schrieb Troy Straszheim:
> On Mon, May 2, 2011 at 1:10 AM, Christian Verbeek
> <verbeek at servicerobotics.eu <mailto:verbeek at servicerobotics.eu>> wrote:
> Dear all,
> I am missing message when subscribing to /rosout
> _log_sub = _node.subscribe( "/rosout", 100, &ROSHandler::logCallback,
> this );
> I do call ros::spinOnce() approximately every 20ms. When I call
> as fast as possible (in a loop) then no messages are lost. But then my
> app needs 60% of the CPU so that is not really desirable.
> If messages are coming in at > 50Hz, one would expect to drop messages
> here, once the buffer of 100 fills up. No? Just trying to establish
> if there is a bug here or not. I suppose a way to check the size of
> the incoming queue would be nice... there is a ticket on this already.
> ros-users mailing list
> ros-users at code.ros.org
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