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One of the performance problems in the cloud system is unbalanced computational load distribution of PM (Physical Machine) due to overloaded situations such as high CPU load or critical thermal condition. Thus, VM (Virtual Machine) inside the PM need to be migrated to other PM to maintain VM performance. Besides, networking path can be effectively controlled to provide better throughput (e.g., latency and bandwidth) that can be provided by implementing SDN paradigm. This paper discusses the implementation of ‘warm migration’ scenario between KVM/QEMU hypervisors, which is enhanced by implementing path selection on the SDN-based network. We develop ViMOS (virtual machine migration with ONOS) application and measures the performance difference between SDN-based reactive forwarding (i.e., centralized L2 forwarding) and SDN-based proactive forwarding (i.e., intent networking). The result shows VM migration using the intent networking has advantages in comparison with reactive forwarding mechanism in terms of migration time, downtime and overhead/processing time. |
