The earliest recollection of this bug is traced back to PAN-OS 8.1.16 - January 08, 2024. This bug is fixed in PAN-OS versions 9.1.3, 8.1.16. Fixed an memory issue associated with a process ( mgmtsrvr ) due to a large number of ACK packets in logs on Panorama or the log collector. For more information: https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-release-notes/pan-os-8-1-addressed-issues/pan-os-8-1-16-addressed-issues https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-release-notes/pan-os-9-1-addressed-issues/pan-os-9-1-3-addressed-issues