usth presentation power-aware scheduler for virtualization tran giang son gtran@enseeiht.fr prof....

USTH Presentation

Power-aware Scheduler for

Virtualization

TRAN Giang Son

gtran@enseeiht.fr

Prof. Daniel HAGIMONT

Oct 19th, 2011

Energy saving

Data center: Large amount of Computers Network devices Air conditioners Almost no monitor, keyboard / mouse

Wattage / computer: ~150W Save power from computers

Virtualization

Multiple operating systems on a same machine Windows Linux Unix Solaris

OS running in Virtual Machines Maximize hardware utilization Save power

Virtualization

Customer Needs hardware to run applications Just enough hardware performance Less $

Hardware provider Provides hardware platform Guarantees performance Less power

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

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

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