1. USTH Presentation Power-aware Scheduler for Virtualization TRAN Giang Son gtran@enseeiht.fr Prof. Daniel HAGIMONT Oct 19th, 2011

2. Energy saving Data center: Large amount of  Computers  Network devices  Air conditioners  Almost no monitor, keyboard / mouse Wattage / computer: ~150W Save power from computers

3. Virtualization Multiple operating systems on a same machine  Windows  Linux  Unix  Solaris OS running in Virtual Machines Maximize hardware utilization Save power

4. Virtualization Customer  Needs hardware to run applications  Just enough hardware performance  Less $ Hardware provider  Provides hardware platform  Guarantees performance  Less power

5. Research work Autonomic management in hypervisor  From grid scale to machine scale  Computers → Virtual machines Analyzed Xen hypervisor  Most widely used  Open source  Credit scheduler

6. Research work Proposed an enhanced scheduler  Distributes CPU power to VMs  Performance impact (or better!)  Power-aware Experiments  Comparison with existing solutions  Improvements in power saving Papers

7. How? CPU frequency control Monitor module Decision making  Keep lowest frequency as possible  Dynamically changes VM's “cap” Guarantees Service Level Agreement  Virtual machine performance