Srikar Dronamraju <sri...@linux.vnet.ibm.com> writes: > PowerVM systems configured in shared processors mode have some unique > challenges. Some device-tree properties will be missing on a shared > processor. Hence some sched domains may not make sense for shared processor > systems. > > Most shared processor systems are over-provisioned. Underlying PowerVM > Hypervisor would schedule at a Big Core granularity. The most recent power > processors support two almost independent cores. In a lightly loaded > condition, it helps the overall system performance if we pack to lesser > number of Big Cores. >
Is this good to do if the systems are not over-provisioned? What will be the performance impact in that case with and without the change? -aneesh