I have a docker stack (wordpress+mysql+nginx+dnscerbot) tested and working without problems on several systems (ubuntu 20.04 vm, synology nas). When I put this same stack with the same configuration and data in a root server (RS 1000 G9, AMD EPYC™ 7702, 8GB...), I get a very degraded performance serving pages in wordpress... (and very very bad with some of them). I don't understand why this might be happening.
No error or warning logs... inside docker, system or SCP.. everything seems fine. I've tried with several Ubuntu and Debian images (and versions, and kernels), and get same result. This does not seem a docker configuration issue.
I ask this in case anyone has had the same or similar experience when migrating a similar configuration.
Thank you very much in advance.