[22638] Occasional shm file disappear

[slp12138]

Is there an already existing issue for this?

• I have searched the existing issues

Expected behavior

Nodes on the same device use shared memory to transfer data normally

Current behavior

At first the nodes could communicate with each other normally, but after a while the consumer could not receive the data, and the shared memory file under /dev/shm disappeared

Steps to reproduce

There are about 30 nodes on a single device, and they will communicate with each other and run for a period of time. But it's not a must-appear, I didn't have this issue on x86, but I had it on an ARM board

Fast DDS version/commit

2.6.8，2.6.9

Platform/Architecture

Other. Please specify in Additional context section.

Transport layer

Shared Memory Transport (SHM)

Additional context

linux version: ubuntu22.04
platform: arm64
ros2: humble

XML configuration file

default configuration

Relevant log output

No response

Network traffic capture

No response

[slp12138]

I wonder what could cause this problem

[Javgilavi]

Hi @slp12138,

Thanks for sharing the issue.

We are going to try to reproduce your case and find how to fix it.
As soon as we find anything, we will reach to you.