ros2/rmw_fastrtps

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Implementation of the ROS Middleware (rmw) Interface using eProsima's Fast RTPS.

Stars: 207
Forks: 147
Open beginner issues: 0
Indexed issues: 59
Avg merge: 2d 7h
Merged PRs (30d): 11

Dominant language: C++
License: Apache-2.0
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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59 open issues indexed

Long running ROS stacks reaching deadlock with shared memory Open

bug

ros2/rmw_fastrtps#908 · 3 comments · 1 assignee · Opened Aug 31, 2026
Lyrical: 9.4.9 changed rmw_fastrtps_shared_cpp ABI (CustomSubscriberInfo); unversioned deb deps allow a mixed 9.4.9/9.4.8 install that crashes all clients Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

ros2/rmw_fastrtps#905 · 3 comments · Opened Aug 12, 2026
NotEnoughMemoryException crash at node init when RMW_FASTRTPS_USE_QOS_FROM_XML=1 with data_sharing AUTOMATIC (Humble / FastDDS 2.6.x) Open

Difficulty 4/5 3-5 days Newbie friendliness 65/100

ros2/rmw_fastrtps#878 · 2 comments · Opened Apr 23, 2026
data_sharing: ON Open

more-information-needed

Difficulty 3/5 1-2 days Newbie friendliness 48/100

ros2/rmw_fastrtps#864 · 2 comments · Opened Jan 23, 2026
fastdds monitor Open

ros2/rmw_fastrtps#861 · 1 comment · 1 assignee · Opened Dec 12, 2025
Node tries to open non-existing segment Open

bug

ros2/rmw_fastrtps#860 · 1 assignee · Opened Dec 4, 2025
The umask setting hasn't taken effect for some files. Besides manually modifying the permissions, what should I do to grant write permissions to other users for those files that aren't affected? Open

ros2/rmw_fastrtps#850 · 1 assignee · Opened Nov 10, 2025
Service Response Timeout - Race Condition Open

bug

ros2/rmw_fastrtps#842 · 3 comments · 3 reactions · 1 assignee · Opened Aug 12, 2025
Question about rmw_wait.cpp Open

more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rmw_fastrtps#833 · 4 comments · Opened Jun 26, 2025
SHMEM Transport errors: open_and_lock_file failed Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rmw_fastrtps#820 · 3 comments · Opened Apr 8, 2025
When running the launch file, some nodes are randomly not activated Open

Difficulty 4/5 3-5 days Newbie friendliness 18/100

ros2/rmw_fastrtps#817 · Opened Apr 4, 2025
FastDDS Publisher ROS2 Subscriber Topic Type Hash Open

ros2/rmw_fastrtps#815 · 3 comments · 1 assignee · Opened Mar 17, 2025
borrow_loaned_message() returns RETCODE_OUT_OF_RESOURCES when using Zero-copy Open

ros2/rmw_fastrtps#810 · 9 comments · 1 assignee · Opened Mar 5, 2025
How to configure Static EDP with one publisher and two subscribers Open

ros2/rmw_fastrtps#801 · 1 comment · 1 assignee · Opened Jan 29, 2025
Multiple Pointcloud2 can not subscribe with fast dds Open

more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rmw_fastrtps#795 · 1 comment · Opened Jan 9, 2025
Service discovery not working reliable Open

ros2/rmw_fastrtps#792 · 5 comments · 1 assignee · Opened Nov 29, 2024
SHM transport: The longer it runs, The more latency increases. (Buffer Full Exception) Open

more-information-needed

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rmw_fastrtps#789 · 39 comments · Opened Nov 20, 2024
Backup Discovery Server Seg Faults on Repeated Use Open

more-information-needed

ros2/rmw_fastrtps#784 · 8 comments · 1 assignee · Opened Oct 5, 2024
Reused shared memory with `PREALLOCATED_WITH_REALLOC` Open

ros2/rmw_fastrtps#783 · 22 comments · 1 assignee · Opened Oct 2, 2024
Segmentation fault when adding a short-lived node to an executor Open

ros2/rmw_fastrtps#777 · 6 comments · 1 assignee · Opened Sep 8, 2024
Example using QoS from XML file error: Change payload size larger than the history payload size Open

documentation enhancement

ros2/rmw_fastrtps#764 · 16 comments · 1 assignee · Opened Jun 4, 2024
Asan regression between Humble and Iron release Open

help wanted

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rmw_fastrtps#760 · 16 comments · Opened May 29, 2024
Image publish subscribe very slow on default ROS2 Humble steup. Open

help wanted

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rmw_fastrtps#757 · 7 comments · 1 reaction · Opened May 16, 2024
[BUG] rclcpp publisher publish function call blocking for up to 35ms with 1 publisher100Hz and 8 subscribers topic echo. Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rmw_fastrtps#754 · 4 comments · Opened Apr 10, 2024
Sometimes heavy CPU load Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

ros2/rmw_fastrtps#749 · 12 comments · 1 reaction · Opened Mar 19, 2024
Messages dropped while multiple publishers are publishing,help with XML profile. Open

more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rmw_fastrtps#747 · 4 comments · Opened Mar 5, 2024
Time to re-establish a connection varies between distributed machines after network is back up Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

ros2/rmw_fastrtps#745 · 6 comments · 1 reaction · Opened Feb 27, 2024
CPU spikes of existing nodes when starting new node Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

ros2/rmw_fastrtps#741 · 18 comments · Opened Feb 16, 2024
Messages get dropped when larger than 0.5MB - using shared memory - QoS is Best_effort Open

more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rmw_fastrtps#739 · 42 comments · Opened Jan 22, 2024
Segfault in MultiThreadedExecutor using `rmw_fastrtps_cpp` Open

backlog bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rmw_fastrtps#728 · 11 comments · 2 reactions · Opened Oct 25, 2023
Windows 10 shared memory related crash/hang Open

more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rmw_fastrtps#713 · 6 comments · Opened Sep 21, 2023
[ros2 humble]:very large delay in transferring images with ros2 service Open

more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rmw_fastrtps#710 · 3 comments · Opened Aug 14, 2023
"Choppy" message timing behavior seen with fast but not cyclone Open

backlog

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rmw_fastrtps#705 · Opened Aug 11, 2023
Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr , dynamic_cast Fail Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rmw_fastrtps#696 · 17 comments · Opened Jun 13, 2023
Node randomly stops responding due to possible deadlock in fastrtps middleware Open

more-information-needed

Difficulty 5/5 Over a week Newbie friendliness 18/100

ros2/rmw_fastrtps#695 · 3 comments · Opened Jun 13, 2023
FastDDS Discovery Server cause Nav2 lifecycle node issue Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

ros2/rmw_fastrtps#692 · 1 comment · Opened May 10, 2023
Subscriber does not attain/maintain ownership of received loaned messages Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rmw_fastrtps#679 · 13 comments · Opened Mar 29, 2023
ROS2 examples_rclcpp_minimal_client test fail Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

ros2/rmw_fastrtps#677 · 3 comments · Opened Mar 21, 2023
Can't use shared memory transport with initialPeersList or discovery server. Open

ros2/rmw_fastrtps#676 · 5 comments · 1 assignee · Opened Mar 15, 2023
Improve the implementation of incompatible type Open

ros2/rmw_fastrtps#675 · 1 assignee · Opened Mar 13, 2023
Discovery server in AP mode Open

backlog

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rmw_fastrtps#673 · 6 comments · Opened Mar 2, 2023
the functionality of ros2cli tools are NOT working when using Discovery Server through router. Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

ros2/rmw_fastrtps#668 · 1 reaction · Opened Feb 6, 2023
rmw_fastrtps get type support failed Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rmw_fastrtps#630 · 1 comment · Opened Aug 3, 2022
Missing nodes on host Windows 10 Humble Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rmw_fastrtps#628 · 9 comments · Opened Jul 11, 2022
guard_condition argument is null on fastrtps only Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rmw_fastrtps#624 · 3 comments · Opened Jun 28, 2022
__rmw_boxrrow_loaned_message works and after some time starts to return RMW_RET_ERROR Open

more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rmw_fastrtps#614 · 2 comments · Opened Jun 22, 2022
Multiple network cards can advertise inappropriate destinations for ROS2 packets. Open

ros2/rmw_fastrtps#609 · 1 assignee · Opened Jun 6, 2022
Unable to communicate only in certain conditions OPENVPN Open

ros2/rmw_fastrtps#595 · 5 comments · 1 assignee · Opened Mar 31, 2022
Unpredictable behavior on machines that have multiple NICs Open

ros2/rmw_fastrtps#593 · 10 comments · 1 assignee · Opened Mar 22, 2022
Segmentation fault in in rmw_fastrtps layer when constructing an rclcpp::Node Open

more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rmw_fastrtps#582 · 5 comments · Opened Feb 11, 2022

ros2/rmw_fastrtps

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