인터럽트 병합 최적화를 통한 네트워크 장치 에너지 절감 방법 연구

• 영문명: A Study on Energy Savings in a Network Interface Card Based on Optimization of Interrupt Coalescing
• 발행기관: 한국IT서비스학회
• 저자명: 이재열 한재일 김영만
• 간행물 정보: 『한국IT서비스학회지』한국IT서비스학회지 제14권 제3호, 183~196쪽, 전체 14쪽
• 주제분류: 경제경영 > 경영학
• 파일형태: PDF
• 발행일자: 2015.09.30

영문 초록

The concept of energy-efficient networking has begun to spread in the past few years, gaining increasing popularity. A common opinion among networking researchers is that the sole introduction of low consumption silicon technologies may not be enough to effectively curb energy requirements. Thus, for disruptively boosting the network energy efficiency, these hardware enhancements must be integrated with ad-hoc mechanisms that explicitly manage energy saving, by exploiting network-specific features. The IEEE 802.3az Energy Efficient Ethernet (EEE) standard is one of such efforts. EEE introduces a low power mode for the most common Ethernet physical layer standards and is expected to provide large energy savings. However, it has been shown that EEE may not achieve good energy efficiency because mode transition overheads can be significant, leading to almost full energy consumption even at low utilization levels. Coalescing techniques such as packet coalescing and interrupt coalescing were proposed to improve energy efficiency of EEE, but their implementations typically adopt a simple policy that employs a few fixed values for coalescing parameters, thus it is difficult to achieve optimal energy efficiency. The paper proposes adaptive interrupt coalescing(AIC) that adopts an optimal policy that could not only improve energy efficiency but support performance. AIC has been implemented at the sender side with the Intel 82579 network interface card (NIC) and e1000e Linux device driver. The experiments were performed at 100 M bps transfer rate and show that energy efficiency of AIC is improved in most cases despite performance consideration and in the best case can be improved up to 37% compared to that of conventional interrupt coalescing techniques.

목차

1. 서 론

2. 관련 연구

3. 인터럽트 병합 최적화

4. 실험 결과

5. 결 론

키워드

Energy Efficient Ethernet Packet Coalescing Interrupt Coalescing Adaptive Interrupt Coalescing Packet Delay Performance