中国邮电高校学报(英文) ›› 2012, Vol. 19 ›› Issue (6): 52-62.doi: 10.1016/S1005-8885(11)60318-X

• Networks • 上一篇    下一篇

DATCP: deadline-aware TCP for the commoditized data centers

张鹏1,王洪波1,李阳阳1,董健康1,程时端2   

  1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2012-05-28 修回日期:2012-09-18 出版日期:2012-12-31 发布日期:2012-12-14
  • 通讯作者: 张鹏 E-mail:zhp@bupt.edu.cn
  • 基金资助:

    This work was supported by the National Natural Science Foundation of China (61002011), the Open Fund of the State Key Laboratory of Software Development Environment (SKLSDE-2009KF-2-08), the National Basic Research Program of China (2009CB320505), the Hi-Tech Research and Development Program of China (2011AA01A102).

DATCP: deadline-aware TCP for the commoditized data centers

  1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2012-05-28 Revised:2012-09-18 Online:2012-12-31 Published:2012-12-14
  • Contact: Peng ZHANG E-mail:zhp@bupt.edu.cn
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (61002011), the Open Fund of the State Key Laboratory of Software Development Environment (SKLSDE-2009KF-2-08), the National Basic Research Program of China (2009CB320505), the Hi-Tech Research and Development Program of China (2011AA01A102).

摘要:

Many flows in data centers have deadlines and missing deadlines would hurt application performance such as affecting response quality in Web applications or delaying computing jobs in MapReduce-like systems. However, transmission control protocol (TCP) which is widely used in data centers now cannot provide deadline-aware transmission service. Service differentiation only distinguishes flows with different priority but is unable to guarantee completion time. In this paper, we propose a new protocol named deadline-aware TCP (DATCP) to provide deadline-aware transmission service for the commoditized data centers, which can be used as a flexible method for flow scheduling. DATCP combines flow urgency and importance to calculate precedence. Flow urgency is dynamically adjusted according to the gap between desired rate and actual throughput. Setting importance can avoid starving the important but no-urgent flows. Furthermore, a flow quenching method is presented which allows as many high precedence flows as possible to meet deadlines under heavy network load. By extensive simulations, the performance of DATCP was evaluated. Simulation results show that DATCP can make flows meet deadlines effectively.

关键词:

data center networks (DCN), deadline-aware transmission service, TCP, flow scheduling

Abstract:

Many flows in data centers have deadlines and missing deadlines would hurt application performance such as affecting response quality in Web applications or delaying computing jobs in MapReduce-like systems. However, transmission control protocol (TCP) which is widely used in data centers now cannot provide deadline-aware transmission service. Service differentiation only distinguishes flows with different priority but is unable to guarantee completion time. In this paper, we propose a new protocol named deadline-aware TCP (DATCP) to provide deadline-aware transmission service for the commoditized data centers, which can be used as a flexible method for flow scheduling. DATCP combines flow urgency and importance to calculate precedence. Flow urgency is dynamically adjusted according to the gap between desired rate and actual throughput. Setting importance can avoid starving the important but no-urgent flows. Furthermore, a flow quenching method is presented which allows as many high precedence flows as possible to meet deadlines under heavy network load. By extensive simulations, the performance of DATCP was evaluated. Simulation results show that DATCP can make flows meet deadlines effectively.

Key words:

data center networks (DCN), deadline-aware transmission service, TCP, flow scheduling