Fast DDS Thread Affinity Errors on macOS Sequoia (M3 Apple Silicon)

Solution to issue cannot be found in the documentation.

• I checked the documentation.

Issue

I'm getting repeated error messages when running RoboStack on macOS Tahoe with M3 Apple Silicon.

Setup:

• Following the installation instructions from https://robostack.github.io/GettingStarted.html#__tabbed_2_3
• ROS 2 Jazzy environment
• with export RMW_IMPLEMENTATION=rmw_fastrtps_cpp
  • Cyclone DDS and Zenoh don't have this issue

Error:
Every time I run a ROS command (e.g., ros2 topic list), I get multiple [SYSTEM Error] messages about thread affinity:

Problem to set affinity of thread with id [0x16d1f7000,dds.log] to value 0. 
Error 'Protocol family not supported' -> Function configure_current_thread_affinity

This repeats for various DDS threads (dds.shm.wdog, dds.ev.0, dds.udp.*, etc.)

Current Behavior:

• The errors appear at the start of every ROS executable that uses DDS
• Despite the errors, basic functionality seems to work (can run examples, subscribe to topics, etc.)

Extra:
When I tried rebuilding ROS/fastrtps/fastcdr from scratch I got to suppress these warnings by setting up some cmake flags when building...

  --cmake-args \
    -DLOG_NO_INFO=ON \
    -DLOG_NO_WARNING=ON \
    -DLOG_NO_ERROR=ON \
    -DINTERNAL_DEBUG=OFF \

It was not a fix, it just hid the error messages

Installed packages

Name                                              Version       Build                  Channel        
──────────────────────────────────────────────────────────────────────────────────────────────────────────
  ros-jazzy-desktop                                 0.11.0        np126py312h9e87179_10  robostack-jazzy
.
.
.

Environment info

libmamba version : 2.3.3
          mamba version : 2.3.3
           curl version : libcurl/8.17.0 OpenSSL/3.5.4 zlib/1.3.1 zstd/1.5.7 libssh2/1.11.1 nghttp2/1.67.0 mit-krb5/1.21.3
     libarchive version : libarchive 3.8.1 zlib/1.3.1 liblzma/5.8.1 bz2lib/1.0.8 liblz4/1.10.0 libzstd/1.5.7 liblzo2/2.10 CommonCrypto/system libb2/bundled
       envs directories : /Users/chello/.local/share/mamba/envs
          package cache : /Users/chello/.local/share/mamba/pkgs
                          /Users/chello/.mamba/pkgs
            environment : ros_jazzy (active)
           env location : /Users/chello/.local/share/mamba/envs/ros_jazzy
      user config files : /Users/chello/.mambarc
 populated config files : /Users/chello/.condarc
       virtual packages : __unix=0=0
                          __osx=26.0.1=0
                          __archspec=1=arm64
               channels : https://conda.anaconda.org/conda-forge/noarch
                          https://conda.anaconda.org/conda-forge/osx-arm64
       base environment : /Users/chello/.local/share/mamba
               platform : osx-arm64

Start with the RoboStack GettingStarted installation instructions and the ROS 2 Jazzy environment using rmw_fastrtps_cpp; reproduce the issue with ros2 topic list on macOS arm64. Compare the Fast DDS thread-affinity errors with Cyclone DDS and Zenoh, and review the cited CMake flags. Done means identifying a real fix rather than merely suppressing the messages.