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Wednesday, May 21 • 10:30am - 10:55am
(LinuxCon Staging) Fast Live Migration for Data-intensive VMs by Exploiting Storage Area Network in Datacenter - Soramichi Akiyama, University of Tokyo

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Improving energy efficiency of cloud datacenters is of great importance today. Dynamic optimization of VM placement using live migration is a key to achieve energy-efficient datacenters. We developed Page Cache Teleportation, a fast and low overhead live migration technique for VMs with large amount of page cache (a.k.a. file cache) such as database VMs and web server VMs. The main idea is to fully utilize the storage area network (SAN) in a datacenter in parallel with the multi-purpose network. Before a migration, our new kernel module inside guest OS detects memory pages containing restorable page cache, which are identical to disk blocks.

During a migration, these pages are copied from a storage server to the destination server via the SAN while other memory pages are transferred via the multi-purpose network. This presentation shows our implementation with QEMU/KVM and Linux, and performance evaluations.


Soramichi Akiyama

Soramichi Akiyama is a Ph.D. student in the Graduate School of Information Science and Technology of the University of Tokyo, Japan. He has an experience of working as an intern at Microsoft Research located in the US in Summer 2013. His research interest is in optimizing cloud datacenters... Read More →

Wednesday May 21, 2014 10:30am - 10:55am

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