Related to https://discourse.openrobotics.org/t/performance-characteristics-subscription-callback-signatures-rmw-implementation-intra-process-communication-ipc/51454/9?u=mini-1235
From the flamegraphs, it seems like rclcpp::experimental::IntraProcessManager::matches_any_publishers has a non-trivial overhead, it would be interesting to investigate whether this can be optimized
Opening this issue to make sure it's not forgotten, more background and discussion can be found in the original post linked above