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Maximizing Power Savings in Virtualized Data Centers: A Power-Aware Scheduler Approach

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Explore a cutting-edge power-aware scheduler designed for virtualization to save energy in data centers by optimizing CPU power distribution to virtual machines, ensuring performance while minimizing power consumption.

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Maximizing Power Savings in Virtualized Data Centers: A Power-Aware Scheduler Approach

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  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

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