Always use the para virtual SCSI controller on the guest VMs for high performance.
Do not overcommit the VM host CPU.
Enable hyper-threading for each CO node to improve the overall host performance by keeping the CPU pipeline busy and allowing the hypervisor to schedule the CPU clock cycle correctly.
Ensure that the VM fits into the correct NUMA node configuration so that Greenplum can leverage this setting for its database engine.
Change per device queue length that is “No of outstanding IOs” to 256 on each CO node to improve the IO concurrency of each data store.
