Runtime Performance Projection Model for Dynamic Power Management

In this paper, a runtime performance projection model for dynamic power management is proposed. The model is built as a first-order linear equation using a linear regression model. It could be used to estimate performance impact from different p-states (voltage-frequency pairs). Workload behavior is monitored dynamically for a program region of 100M instructions using hardware performance monitoring counters (PMCs), and performance for the next region is estimated using the proposed model. For each 100Minstructions interval, the performance of all processor p-states is estimated and the lowest frequency is selected within specified performance constraints. The selected frequency is set with a low-overhead DVFS-based (dynamic voltagefrequency scaling) p-state changing mechanism for the next program region. We evaluate the performance degradation and the amount of energy saving of our dynamic power management scheme using the proposed projection model for SPEC CPU2000 benchmark on a Pent...

• Type: Conference
• Year: 2007
• Where: APCSAC
• Authors: Sang Jeong Lee, Hae-Kag Lee, Pen-Chung Yew
• Keywords: APCSAC 2007, Dynamic Power Management, Hardware, Performance, Performance Degradation