We have multiple baremetal servers part of our dockers and Openshfit(kubernetes) cluster. For some reason the underlying pods are extremely slow only with BM Nodes, the traditional VMs hosted on exsi servers work flawless. the pods take up very long to come up at all times liveness probes fail often. The BM nodes have 72 cores and 600 GB RAM and 2 n/w ports & are underutilised say Load Average just about 10 ~ 20 and Free RAM over 300 ~ 400 Gigis at all times. sar output looks normal, /var/log/messages have nothing unusual. Not able to nail down what's causing the slowness..

Is there a linux/docker command that will help here & what do i look for? Could this be a noisy neighbour problem? or do I need to tweak some Kernel Parameter(s). The slowness is always there, it's not intermittent. We have closely worked with RH support and got nothing from that exercise. Any suggestions welcome..