[Q&A] native code plugins and heap memory issues

[TheDaz-1]

What is a problem?

Is there a way to customize the heap memory size available for native code plugins tied in via the ruby FFI library ? This is what systemd tells me about the running service :

● fluentd.service - Fluentd
     Loaded: loaded (/etc/systemd/system/fluentd.service; enabled; preset: enabled)
     Active: active (running) since Fri 2024-06-21 02:56:59 EDT; 30min ago
       Docs: https://www.fluentd.org/
   Main PID: 487 (ruby)
      Tasks: 9 (limit: 26212)
     Memory: 92.0M
        CPU: 5.403s
     CGroup: /system.slice/fluentd.service
     ...

Now my plugin is written in C++ and would like to make use of STL containers but this leads to frequent crashes because the native code is unable to allocate heap memory for the containers.

Describe the configuration of Fluentd

No response

Describe the logs of Fluentd

No response

Environment

- Fluentd version:
- TD Agent version:
- Fluent Package version:
- Docker image (tag):
- Operating system:
- Kernel version: