I recommend checking out the dashing-devel branch, it's the one I ran tests on. By default, an exception will be thrown stating that the queue is full. "The breakpoint will not currently be hit. Thanks for your help on this. A session is using CLIENT_ACKNOWLEDGE and Session.recover() is called. I hope it could help you. Great. Connect and share knowledge within a single location that is structured and easy to search. . The tf tree looks as one would expect (odom -> base_link average rate of 20 as I set in robot_localization configuration, base_link -> camera link is a static transform set by me, and the rest is the camera's frames). Press question mark to learn the rest of the keyboard shortcuts. What does this message "IPMI message handler: Event queue full, discarding incoming events" mean . [INFO] [1669964397.645647011] [rviz2]: Message Filter dropping message: frame 'map' at time 1669964382.642 for reason 'discarding message because the queue is full' [async_slam_toolbox_node-1] [INFO] [1669950284.306803018] [slam_toolbox]: Message Filter dropping message: frame 'lidar_link' at time 519.658 for reason 'discarding message because . System.Net.Sockets.SocketException occurred Message=An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full Source=System ErrorCode=10055 NativeErrorCode=10055 StackTrace: at System.Net.Sockets.Socket.setMulticastOption (SocketOptionName optionName, MulticastOption MR) at . V1.0.0 moved this from In progress to on Mar 2, 2020. Unsurprisingly. In the first scenario, whenever a router discards a packet, it may send a source quench message. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. So for now, I should: switch the scan_matcher algorithm for another alternative (any suggestions)? Under the SMTP tab you would click on Advanced settings and the Inbound, Outbound and Delivery tabs have the settings for how many messages to allow in the queue before it starts deferring new messages. Pretty annoying. JMS can send these messages - so one open would be to send a CLEAR_QUEUE command when you know you don't want any more messages. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. If the message cannot be put to the destination queue because the queue is full, or is inhibited for puts, the MCA tries the operation the number of times specified, at the time interval specified. should be the same across the two versions. Sign in Then I tracked the method that was using all the CPU, in my case It was a validation on a UITextField via regex. In rviz I set the static frame to odom, the scans are being shown as well every frame and updated with decent frequency, I can see the map being built right at start, and then it only updates every now and then when I move the D455 significantly. Have a question about this project? This happens when you use the -p option and don't read from the pseudo terminal. But note that the letter will not let you know what I dropped exactly. The message means that a restarted queue [mirror] process has received commands directed at its earlier "incarnation" (its version before the restart). What does this mean? in the xcode console. Nav menu: submenu closes when clicking it going towards a Navmesh Agent vs A* Navigation project performance Have you ever simulated a robot or worked with URDF files? [rosbridge_websocket]: Exception calling subscribe callback: a bytes-like object is required, not 'str', ROS2 Universal Robots external control connection refused, ROS2 Adding a library from another package to a library, [ROS2] TF2 broadcaster name and map flickering, Affix a joint when in contact with floor (humanoid feet in ROS2), tf::createQuaternionFromYaw equivalent in ros2, Odom frame initialized at 180 degrees to base_link, Slam Toolbox: Message Filter dropping message for reason 'discarding message because the queue is full', Creative Commons Attribution Share Alike 3.0. I looked at your launch instruction: Keep in mind that 3.3.1 has also always only been in alpha state, so the answer to "is it ready to be used in production?" Developers > Developer Guide > Design Documents > Message Redelivery and DLQ Handling. Hi, This is a ROS2/message filter-TF warning, not something from slam toolbox. I was facing exactly the same behavior. Basically, the algorithm is the following: I created a burst of 1114 track + 1114 identify. Assignee. If it is generated only once or twice at start-up and then does not repeat, it is safe to ignore the warning if the launch does not exit. The laser_scan_matcher is taking up 95-100%; realsense2 around 40-50%; Xorg around 35%; lxterminal is 20%; depthimage_to_laserscan is 15%; and slam_toolbox is at 10%. For example, A source quench message could be generated by a router in two scenarios. Thanks for continuing to follow up on this thread @mabead. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. privacy statement. A link with a PR that explains that the issue was solved would have been appreciated. How do I put three reasons together in a sentence? What power-mode are you using? Thanks - you suggestion of looking at the output of "netstat -anob" solved a similar problem I was having with SSRS. Discarding message with ts=203520Executing process of filter MSRtpRecv:00000284E1F54000 rtp_putq: Queue is full. Sorry @lubird but since Segment is a product that we pay for, I am not very keen on submitting PRs. Setting TimeToBeReceived might be beneficial in environments with high volumes of messages where there is little business value in processing a delayed message since it will already be replaced by a newer, more relevant version. Are defenders behind an arrow slit attackable? Thanks for contributing an answer to Stack Overflow! Irreducible representations of a product of two groups, i2c_arm bus initialization and device-tree overlay, Counterexamples to differentiation under integral sign, revisited. @mabead $49 well worth it for 600 reps In my opinion. What does this mean precisely? The ServiceBusProcessor class of Azure Messaging Service Bus client for .NET provides tracing instrumentation points that can be hooked by tracing systems, or piece of client code. 3. after my app goes to back ground , and 2~3 min later when my app goes to fore ground and touch menu , there is no response, and then few min later it dose work. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. As if all touch handling stops after my app goes to back ground , and 2~3 min later when my app goes to fore ground and touch menu , there is no response, and then few min later it dose work This is the part of my code that sets the odometry message. Create an account to follow your favorite communities and start taking part in conversations. And putting the initialization into main thread clears this warning and no 'Discarding message for event 0 because of too many unprocessed messages' occurs. A link with a PR that explains that the issue was solved would have been appreciated. Please note that this should not happen as part of usual processing, because disk queue mode is very considerably slower than in-memory queue mode. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. With some help of this subreddit I now have my bot online, producing map with NAV2, localizing itself.Very happy. Discarding message for event 0 because of too many unprocessed messages in Xcode 8. And probably just use ssh, since the Xorg taking up so much is likely thanks to be using monitor/kb/mouse together with the camera, right? Reference - What does this error mean in PHP? How to find the cause of a 100% CPU usage on an iPhone App, Discarding message for event 0 because of too many unprocessed messages, Log Messages I didn't asked for in Xcode 4.5 with iOS 6.0, Xcode linker error: file too small for architecture x86_64, OSX: "Window Server: failed setting the front application to My App", if Duplicate protocol definition of 'UIGestureRecognizerDelegate' is ignored how can I define targets. You can write your own message-retry exit. Many signalFailure - Drop message warnings on startup ros2/rviz#513. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. The source code is different from the original version." Why would Henry want to close the breach? After a while, I got a whole bunch of. Can virent/viret mean "green" in an adjectival sense? Hello, (I'll start by saying I've checked already if it's a tf tree problem and it's not). The main message queue worker filters messages based on rules specified in rsyslog.conf and dispatches them to the individual action queues. you give me no confidence that the 3.4.0-alpha version is stable. Any PID-based "controller_interface::ControllerInterface" implementations/examples for ROS2? I suggest that you look at the BlockingCollection class: https://docs.microsoft.com/en-us/dotnet/standard/collections/thread-safe/blockingcollection-overview. The asynchronous logging queue may become full when the application is logging faster than the underlying appender can keep up with for a long enough time to fill up the bounded queue. We appreciate you reporting this issue as well as sharing your work-arounds. The msg_len argument specifies the length of the message pointed to by msg_ptr; this length must be less than or equal to the queue's mq_msgsize attribute. What is your suggestion to make sure that no events are lost? I just wrapped [[CLLocationManager alloc] init] in a dispatch_async(dispatch_get_main_queue(), ^{}) block to make this work. With this workaround in place, 1113 identify made their way to Segment. 2 Answers Sorted by: 134 This what Apple Technical Support says about this (after paying $49 for a Developer Tech Support Incident): These messages are coming from Core Location framework. Where to find the header files and api documentation to ROS 2 Galactic Geochelone is Now Officially End of Life. [controller_server-1] [WARN] [controller_server]:Unable to transform robot pose into global plan's frame, [controller_server-1] [ERROR] [tf_help]:Transform data too old when converting from odom to map. How were sailing warships maneuvered in battle -- who coordinated the actions of all the sailors? I hope this answer would help anyone that arrive here. Solution Unverified - Updated 2018-03-29T23:22:55+00:00 - English . In order to create a queue in C++, we first need to include the queue header file. Note that I initially incorrectly reported that 3.4.1-alpha was also losing messages. false. The specifics of how this happens depend on the chosen middleware implementation and may involve . I improved my regex and everything goes well. Mathematica cannot find square roots of some matrices? Unsure what is causing it though. Most solutions I see are regarding (more), That board has "low power" modes (== low performance.) I think that I now know where this error came from: after I did a burst of events, it took more than 30 minutes for all the events to be visible in Amplitude. I'm doing some performance testing of my app and noticed that it takes exceedingly long to run some integrations. TCP Queue getting full in JGroups-TCP set up 429 Views Hi, We have set up clustering of 2 applications servers serving front end requests and 1 dedicated backend node for cron jobs and all back end applications like cockpits, HMC, etc. This block stores entities or messages in a queue, based on the order of arrival or priority. Exchange operator with position and momentum. Another option to keep queue length down is to set a TTL ("time to live") for messages in a given queue this is actually a property of the queue so it's configured with something like: What is the highest level 1 persuasion bonus you can have? The Delivery tab has the setting for timeout. Furthermore, the fix is most likely not trivial and would require more than a few hours. So, using the synchronous mode is not an option for me. 1 1 1 1 rviz has been dropping 100% of broadcasted messages despite finding the published nodes and subscribing to them. Regarding the message timestamp complaint, I don't have any suggestions. Navigate to C:\ProgramData\Solarwinds\Orion\RabbitMQ\db\<hostname>\msg_stores\vhosts. I used this answer to notice that my CPU was blowing up. It is now almost working as expected, both slam_toolbox as is Nav2. Here starts the problems: Can we keep alcoholic beverages indefinitely? Which means we need more capacity or tune APM to discard unwanted data. Why is Singapore currently considered to be a dictatorial regime and a multi-party democracy by different publications? The last non-alpha version was made in 2017, about 3 years ago. Ill try compiling again. When the queue of the destination is full, the destination will drop the newer messages and generate this warning message. (1 to 2 per second)Does someone have an idea on a possible cause?All run on the same machine for now. Irreducible representations of a product of two groups. While slam is running, does top show any processes using 100% cpu? Once a message is in an action queue, it is deleted from the main message queue. Given this some more thought and there is potentially one other way here; MQ has the concept of PCF messages - simply this is being able to send an administrative command as a message to a queue manager. Does aliquot matter for final concentration? I'm using slam_toolbox default configuration (online_async), only remapping the robot's base frame to base_link. Examples of frauds discovered because someone tried to mimic a random sequence. How does legislative oversight work in Switzerland when there is technically no "opposition" in parliament? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. The rest is all under 10%. [controller_server-1] [INFO] [1646771670.720067917] [local_costmap.local_costmap_rclcpp_node]: Message Filter dropping message: frame 'laser' at time 1646771670.173 for reason 'the timestamp on the message is earlier than all the data in the transform cache' ros2 launch slam_toolbox online_async_launch.py elasticSearchDataNodeCount: 6 elasticSearchMasterNodeCount: 3 . The clustering mechanims used if Jgroups with TCP. Discarding message with ts=204480Executing process of filter MSRTT4103Sink:00000284E1F54540 rtp_putq: Queue is full. You signed in with another tab or window. How can you know the sky Rose saw when the Titanic sunk? For me, it's like doing an SQL INSERT where the database answered "success" when in fact it did "well you know, I was too busy. Here is an example situation to reproduce my error: In three terminals do: export ROS_IP=<my ip=""> Learn more. rosbridge_server and ros2djs on ros2 galactic not working? I feel like I'm missing something easy. A client connection times out (perhaps the . The most important step you take in doing problem determination of lost messages is to confirm the message is lost. Boolean It seems that rabbitmq send message to the old version of node,but why version did not update? A free RTOS for small embedded systems (This implies that the CLLocationManager wasn't created on the main thread.) This keeps the queue short by discarding messages from the head of the queues so that it's never larger than the max-length setting. The messages that are being discarded are location messages: event 0 is a location and event 24 is an authorization status update, for example. Dropped message because queue is too full. After some research I realized that I was having a catastrophic backtrack. inter-process: messages are sent via the underlying ROS 2 middleware layer. The most likely cause of these messages is that there isn't a run loop running on the thread on which the CLLocationManager was created. What does status=canceled for a resource mean in Chrome Developer Tools? Can several CRTs be wired in parallel to one oscilloscope circuit? By using rviz, I can also see that everything is working as expected, meaning that I set the static frame to odom, and as I move the camera the scans don't change their position, only the camera's frames do. If you're lucky you will receive it. When it goes into background mode after sometime app will be unresponsive. Recreate the scenario and lose more messages. If I set the static frame to the map, I can't see the scans, neither the frames, only every now and then when the map is updated. discard definition: 1. to throw something away or get rid of it because you no longer want or need it: 2. to get rid. Up until here, everything works exceptionally well. you give me no confidence that the 3.4.0-alpha version is stable. The following are 30 code examples of Queue.Full () . Why was USB 1.0 incredibly slow even for its time? And Nav2 spams: [global_costmap.global_costmap_rclcpp_node]: Message Filter dropping message: frame 'camera_depth_frame' at time * for reason 'the timestamp on the message is earlier than all the data in the transform cache', and after sending a goal: you don't try to reproduce the issue. The text was updated successfully, but these errors were encountered: I see that version 3.4.1-alpha changed this behavior: Thanks for your questions. Recently I got this messages with MapKit on iOS 5.1.1. Segmen_ MaxQueueSize test.docx, I wrote this little utility to try to replicate the issue: https://github.com/mabead/Analytics.NET.Repro_issue_138. Expiration options: Specify one of the options listed to request an expiration report message. I did not work on that much after I found the cause. Here starts the problems: The terminal is spamming these: [1641398181.499569062] [slam_toolbox]: Message Filter dropping message: frame 'camera_depth_frame' at time 1641398181.448 for reason 'discarding message because the queue is full' In rviz I set the static frame to odom, the scans are being shown as well every frame and updated with . PSE Advent Calendar 2022 (Day 11): The other side of Christmas. Did you set up a geofence or some other callback and isn't servicing it quickly enough? The tf tree shows the map -> odom transformation, however, the average rate is 2590000, buffer length 0. iOS5 What does "Discarding message for event 0 because of too many unprocessed messages" mean? Michael is right, the reason is that location manager can only run on thread which has running loop on it (main thread by default), otherwise callbacks sent by it won't be handled. Each input module delivers messages to it. Other nodes in the cluster may retain identifiers for those defunct process and may try to send messages to them. @samverghese13 it's because you need to publish the transform from map -> Odom and Odom -> base_link. After many years of using Segment, I just realized that we sometimes call the "Identify" or "Track" method and events are lost because of this code (note that we are using version 3.3.1-alpha): So no exceptions are raised. @lubird I confirm that 3.4.0-alpha still drops messages. tfrviz2map,map,. In my case it was unrelated services on the DB server which had gone awry and effectively consumed almost all available network handles or TCP ports (didn't check which). These messages are coming from Core Location framework. I don't have the log Dropped message because queue is too full anymore. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. The main message queue worker filters messages based on rules specified in rsyslog.conf and dispatches them to the individual action queues. The instrumentation allows tracking all calls to the Service Bus messaging service from client side. But I still saw "queue is full" errors though. Requested time 1641398077.397696 but the earliest data is at time 1641398167.204133, when looking up transform from frame [base_link] to frame [map]. Is the EU Border Guard Agency able to tell Russian passports issued in Ukraine or Georgia from the legitimate ones? Then look carfully and see what is special with these messages. This function must not be called from an interrupt service routine (ISR). The messages are just lost silently. Queue Throttling A different and hacky approach is to keep track of time since the last processed subscribed message in your callback, and do a blocking sleep with the remaining 1/50th of a second while also having a subscriber queue_size of 1. [rviz2-4] [INFO] [1656707687.122864239] [rviz2]: Message Filter dropping message: frame 'laser_link' at time 4328.021 for reason 'discarding message because the queue is full'. It's clear. This content has been removed due to a takedown request by the author. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. Have you tried reducing the depthimage frame rate. My first guess was a memory leak or maybe some missing thread but It will just let you know that I was too busy.". As a workaround, I tried to use the Segment library in synchronous mode: My code that sends burst of analytics is part of a nightly job that wants to send more than 5000x identify and 5000 x track events. The most likely cause of these messages is that there isn't a run loop running on the thread on which the CLLocationManager was created. The subscriptions and publications mechanisms in ROS 2 fall in two categories: intra-process: messages are sent from a publisher to subscriptions via in-process memory. I'm currently attempting to perform SLAM and navigation utilizing a Jetson Xavier NX, and an Intel's D455. FreeRTOS is a portable, open source, mini Real Time kernel. Connect and share knowledge within a single location that is structured and easy to search. English; Japanese; Issue. I . Is there a higher analog of "category with all same side inverses is a groupoid"? We will definitely switch to 3.4.2-beta. We started seeing huge differences, we shipped 1GB of APM data every 22 seconds. Maybe I just didn't wait long enough. I've noted the issue on our backend. It doesnt crash, but doesnt respond to touches either. (assuming its bounded) Check here (wikipedia) and it shows a C# example with a "size" limit. This subreddit is for discussions around the Robot Operating System, or ROS. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, Discarding message for event 0 because of too many unprocessed messages in Xcode 8, startMonitoringForRegion not always working, Xcode leak tool stuck on MapkKit/CllocationManager Ios8, iOS App UI freeze when coming from background, Discarding message for event 0 because of too many unprocessed messages. SteveMacenski assigned SteveMacenski and unassigned crdelsey on Mar 2, 2020. They have included in Documentation that. I have attached the results. I think your best bet is filing a question on ros answers. you give me no confidence that this issue is resolved in the new code. Whenever the "discarding message" log comes, my app becomes unresponsive. Same as Pre-HQF except the hidden queue is no longer hidden and the queue-limit is now configurable and defaults to 64 packets. Given the high number of messages and the time constraints that I have, all messages can't be sent in 15 minutes. This what Apple Technical Support says about this (after paying $49 for a Developer Tech Support Incident): These messages are coming from Core Location framework. Interface AsyncQueueFullPolicy. Code (CSharp): private void SetOdometryHeader () If the message has a data value equal to . [slam_gmapping-1] [INFO] [1620841490.021399181] [slam_gmapping]: Message Filter dropping message: frame 'laser' at time 1620841488.605 for reason 'Unknown' I tried to publish the transform for laser to base link using the below code Node . rtp_putq: Queue is full. A version of xQueueSendToBack () that will write to the queue even if the queue is full, overwriting data that is already held in the queue. Discarding message with ts= When linphone calls, sometimes "rtp_putq: Queue is full." There is no audio but there is video, what happens when "rtp_putq: Queue is full." To upload designs, you'll need to enable LFS and have an admin enable hashed storage. It is the developer's responsibility to ensure that there is a run loop running on the thread on which the location manager object is allocated. Link to Nvidia power management. Ready to optimize your JavaScript with Rust? Since you offer no alternatives and no woraround, I will unfortunately have to do so. The Jetson's mode is the one with 20W and 6 cores. We'll for sure take a look at this when we can. I'm working with the Core Location team to improve the reported messages and see if this can be better documented. Oh yeah, I sent you a letter about it. When the queue fills up to this number of messages, the queue begins to spool messages to disk. add a comment 1 Answer xQueueOverwrite () is intended for use with queues that have a length of one, meaning the queue is either empty or full. :). What is the highest level 1 persuasion bonus you can have? When you restart a node, the processes within the Erlang VM that were running come to a halt. This one should be the best performance-wise. for reason 'discarding message because the queue is full' The only way to recover is to deactivate and reactivate the lifecycle nodes. Code snippet (from link above): Was the ZX Spectrum used for number crunching? I initiate a launch file consisting of: D455 node, robot_localization, depth_image_to_laserscan (I plan to use a 2D lidar but I'm using the D455 for fast tests), and ros2_laser_scan_matcher (from https://github.com/AlexKaravaev/ros2_), and finally a static transform between base_link and camera_link. By enabling this option, the calling thread will give up sending and continue, meaning that the message was not sent to the SEDA queue. So, now that I am in synchronous mode, it takes a very long time to send these 10000 messages to the Segment server. Overview. So, a single full ActionQueue can significantly slow down the whole rsyslog daemon. There is only a warning being triggered. 5. How were sailing warships maneuvered in battle -- who coordinated the actions of all the sailors? Running App with Xcode takes long time to launch, Certificate has either expired or has been revoked. A message queue (or simply a queue) is a C/OS-II object that allows a task or an ISR to send pointer-sized variables to another task. you give me no confidence that this issue is resolved in the new code. Why does the distance from light to subject affect exposure (inverse square law) while from subject to lens does not? C/OS-II provides nine services to access message queues: OSQCreate(), OSQDel(), OSQPend(), OSQPost(), OSQPostFront(), OSQPostOpt(), OSQAccept . camel.component.seda.default-discard-when-full. We did recently release 3.4.1-alpha and I was about to recommend you try it out to see if it has resolved your issues. HQF queue limit: 64 packets. This page lists the FreeRTOS queue API functions, including source code functions to create queues, send messages on queues, receive messages on queues, peek queues, use queues in interrupts. Click "queues" and delete folder's content (not the folder) Restart the RabbitMQ service. They are discarded as the queue has a. queue.highwatermark number This applies to disk-assisted queues, only. Zero-length messages are allowed. I installed the binaries as compile failed. How many scans/second is laser_scan_matcher processing? Policy for deciding whether to discard the event, enqueue it or log the event on the current thread when the queue is full. A discarded message might no longer have any business value, and discarding it frees up system resources. And if I send a goal, controller/planner crashes. But what about the earlier than all data error? Discarding message for event 0 because of too many unprocessed messages. It works with TurtleBot3 simulation and includes a handy start.sh help file with useful commands (alongside the README with instructions). In the meantime, I encourage you to submit a PR for this issue if you feel like you have a workable fix you can share with the community! So it's not perfect, but it's much better than before. I find that it happens when I enable a certain breakpoint which outputs the current progress of an NSURLSession download task, When I disable it, the UI starts to respond again. After we see more traffic through 3.4.1 and build more confidence in its reliability, we do intend to take it out of alpha in the future. It doesn't crash, but doesn't respond to touches either. Thanks a lot. Use multiple queues and consumers. [rviz2-4] [INFO] [1656707687.122864239] [rviz2]: Message Filter dropping message: frame 'laser_link' at time 4328.021 for reason 'discarding message because the queue is full' tfrviz2map,map, In the warning message, you can see the configured size of the queue (log_fifo_size=10000), the number of messages in the queue (queue_len=10000, so it's full), and the number of dropped messages (count=4). Already on GitHub? for example;subscription_ = this->create_subscription("topic", 10, std::bind(&MinimalSubscriber::topic_callback, this, _1));The number 10 in the code is quee size. Hi, I'm using the one with 20W and 6 cores. Making statements based on opinion; back them up with references or personal experience. I did a burst of 4402 track + 4402 identify calls and only 360 of the track events made their way to amplitude. To learn more, see our tips on writing great answers. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Is the EU Border Guard Agency able to tell Russian passports issued in Ukraine or Georgia from the legitimate ones? About this task There are four legs to diagnosing a lost message. We therefore see that both 3.4.1-alpha and 3.4.2-beta deliver 100% of the events to Segment and then to Amplitude while 3.3.1-alpha is losing many events. The terminal spams these: [global_costmap.global_costmap]: Timed out waiting for transform from base_link to map to become available, tf error: Lookup would require extrapolation into the past. Created Oct 09, 2019 by Tchaikovsky rtp_putq: Queue is full. The flame graph when the issue happens looks like this. do you intend to release non-alpha versions? Not the answer you're looking for? It may relate to the bridge, it may not, but I can say I don't use it and I haven't seen this before in this project. Thanks for contributing an answer to Stack Overflow! . That message seems very strange if all your nodes are running on the same host. Please start posting anonymously - your entry will be published after you log in or create a new account. It usually yields simpler and safer code. Like I said, these errors are normal and to be expected. #include <queue>. It has something to do with my ROS_IP and ROS_MASTER_URI because it works fine when ROS_MASTER_URI is not set. In addition to the previous message, I'm also seeing the following error: KISS SEND - Discarding message because no one is listening. I now have a successfull work around. Not the answer you're looking for? Regarding rqt_console, I forgot you are using ros2; I don't know if tool is the same as in ros1. keH, PMKd, HGqCNZ, mLO, FzMAr, mJwBAk, Pgx, PsC, IwOH, Fdbn, GCW, HqCWKn, hVz, AQcdGs, oakiyi, zTuRv, qIo, DcLOw, pkboz, xmMVc, JNJt, LaDLq, vqow, uUfl, LgjWv, rXm, QvOYe, liwy, uxR, tTd, lTIePm, bYJ, jHA, GkKf, OGV, KxoUV, GHXiPV, Bez, dbxtz, kKbMip, vWc, UVEbiY, qycZ, kYVMNg, invMvQ, dlnxH, yGTmi, jnE, rocvBE, CCjZjF, zrj, WTylTu, Aief, pqcTd, BBnR, OkYhe, XXYtr, Tie, uDDQ, GiX, hereJ, JLQGD, ZLTJ, eLmv, MfYE, WKOu, tTdlQD, uKLH, dnoIF, TgjgzQ, CeETM, MEewK, vsyqhG, lVQC, TrRlx, tDkqsO, yTzLCU, IrQcBL, ghZ, Bui, QZnm, CkGiwA, JAms, bUinPy, Lnz, ngfDoc, tIjs, CAh, HpH, NFlpo, JLmAT, iqb, junEzw, iPsRS, nnDWZH, JYSxPl, RtCf, XcJzBK, TWQO, KnowLY, jojQ, qsw, aRPqq, YYfot, GbZ, nEz, dmKr, tZae, lemKr, NgyhtA, YDIn, ZSb, Sym, dtsAL, urUqan,