Anyone else noticed systemd input causing fairly large increase in virtual memory used by the fluent-bit process? Without systemd-input:

USER         PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root      105637  0.3  1.1 133760 43556 ?        Ssl  08:51   0:00 /opt/fluent-bit/bin/fluent-bit -c /etc/fluent-bit/fluent-bit.yaml

With systemd-input

USER         PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root      105691  0.6  1.6 614252 63588 ?        Ssl  08:52   0:00 /opt/fluent-bit/bin/fluent-bit -c /etc/fluent-bit/fluent-bit.yaml

systemd-input configuration

pipeline:
  inputs:
    ...
    - name: systemd
      tag: 'log.systemd.*'
      db: /var/spool/fluent-bit/logs.db
      lowercase: true
      strip_underscores: true
      mem_buf_limit: 50MB
      storage.type: memory
    ...