The analysis of power and performance for storage application on multi-core multi-processor server using DVFS, per-core power gating and CPU packing
| Autor: | Chia-yi Yang, 楊嘉怡 |
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| Rok vydání: | 2012 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 100 Microprocessor is the largest power consumption source in a high efficient server system. Due to the slow executing speed of the memory, hard disks and other I/O devices, it can’t always be in high utilization and causes power waste, reducing power consumption of microprocessor has became one of the important topics in server system design. With the explosive growth of data processing capacity demand, multi-core multiprocessor is the mainstream microprocessor structure of the high efficient server for increasing the efficiency and capability of computing. Most researches of microprocessor power management focus on dynamic voltage and frequency technology (DVFS) and per-core power gating(PCPG) or dynamic voltage and frequency technology (DVFS) and CPU packing. Due to the explosive growth of digital data, the storage server demands increase every year. It needs to execute large data access, but because the disk access speed is slower than the memory access speed, thus microprocessor usually execute in low utilization. In this thesis, it uses three technologies: DVFS, PCPG and CPU packing to execute a low power system of multicore multiprocessor in storage application. Its purpose is to reduce the power consumption that all processors and its cores are running at the same time, but they are idle to wait accessing to hard disc. The experiment shows that multicore multiprocessor can reduce 20.26% of power consumption when it uses DVFS and PCPG at the same time; it can reduce 52.98% of power consumption when it uses DVFS and CPU packing at the same time. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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