@snm1523,   Disk IO intensive workloads can cause the kernel to swap even if swappiness is set to 1.   Have you tried increasing the vm.vfs_cache_pressure kernel parameter on all worker nodes? Here is a post on how to fine tune the parameter: http://datavelo.com/en/2018/04/10/kernel-swapping-vm-swappiness-1   Best, z ... View more