An Energy-Efficient Task Scheduling Mechanism with Switching On/Sleep Mode of Servers in Virtualized Cloud Data Centers

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Parameter</td><td class="align_left">Value</td><td class="align_center">Explanation</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">μ</td><td class="align_center">0.1</td><td class="align_center">The service rate of a VM</td></tr><tr><td class="align_left">M</td><td class="align_center">10</td><td class="align_center">The number of physical servers in a data center</td></tr><tr><td class="align_left">Pon</td><td class="align_center">10 W</td><td class="align_center">Power use of a physical server in on mode</td></tr><tr><td class="align_left">Pbusy</td><td class="align_center">1 W</td><td class="align_center">Power use of a busy VM</td></tr><tr><td class="align_left">Pidle</td><td class="align_center">0.1 W</td><td class="align_center">Power use of an idle VM</td></tr><tr><td class="align_left">Psleep</td><td class="align_center">0.5 W</td><td class="align_center">Power use of a physical server in sleep mode</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Mathematical Problems in Engineering

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Table 2: An Energy-Efficient Task Scheduling Mechanism with Switching On/Sleep Mode of Servers in Virtualized Cloud Data Centers 