中文摘要：

In modern data centers, because of the deadlineagnostic congestion control in transmission control protocol(TCP),many deadline-sensitive flows can not finish before their deadlines.Therefore, providing a higher deadline meeting ratio becomes a critical challenge in the typical online data intensive(OLDI) applications of data center networks(DCNs). However, a problem named as priority synchronization is found in this paper, which decreases the deadline meeting ratio badly. To solve this problem, we propose a priority probability deceleration(P2D) deadline-aware TCP. By using the novel probabilistic deceleration, P2 D prevents the priority synchronization problem. Simulation results show that P2 D increases the deadline meeting ratio by 20% compared with D2 TCP.

英文摘要：

In modern data centers, because of the deadline- agnostic congestion control in transmission control protocol （TCP）, many deadline-sensitive flows can not finish before their deadlines. Therefore, providing a higher deadline meeting ratio becomes a critical challenge in the typical online data intensive （OLDI） ap- plications of data center networks （DCNs）. However, a problem named as priority synchronization is found in this paper, which de- creases the deadline meeting ratio badly. To solve this problem, we propose a priority probability deceleration （P2D） deadline-aware TCP. By using the novel probabilistic deceleration, p2D prevents the priority synchronization problem. Simulation results show that P2D increases the deadline meeting ratio by 20% compared with D2TCP.