vsocket:一种基于RDMA的兼容标准套接字加速方法  

vsocket:an RDMA-based Acceleration Method Compatible with Standard Socket

作　　者：陈云芳[1] 茆昊天 张伟[1] CHEN Yunfang;MAO Haotian;ZHANG Wei(School of Computer Science,Nanjing University of Posts and Telecommunications,Nanjing 210000,China)

机构地区：[1]南京邮电大学计算机学院,南京210000

出　　处：《计算机科学》2023年第10期239-247,共9页Computer Science

摘　　要：为了兼容Linux标准套接字,同时利用RDMA提高使用套接字的程序的性能,提出在上层应用与底层RDMA之间搭建一个中间件——Viscore Socket adaptor(简称vsocket);通过拦截socket API,将上层应用通过套接字收发的数据流无缝转接到RDMA承载上。vsocket绕过管理收发缓冲区的内核,针对TCP和UDP分别实现了用户空间的内存管理机制,使用RC类型的RDMA网络支持TCP加速,使用UD类型的RDMA网络支持UDP加速,并重用Linux UDP来辅助其路由。实验结果表明vsocket能够保证Linux标准套接字接口的兼容性,提升网络性能,摆脱Linux内核网络协议栈的限制,改善收发数据的延迟与带宽。In order to be compatible with Linux standard sockets and utilize RDMA to improve the performance of programs using sockets,this paper proposes to construct a middleware Viscore Socket adaptor,referred to as vsocket between the upper-layer application and the underlying RDMA.By intercepting the socket API,we seamlessly transfer the data stream sent and received by the upper-layer application through the Linux socket to the RDMA bearer.The vsocket bypasses kernel and implements memory management mechanism in user space for TCP and UDP.It utilizes RC type RDMA network to support TCP acceleration,uses UD type RDMA network to support UDP acceleration,and reuses Linux UDP to assist routing.Experimental results show that vsocket can ensure the compatibility of the Linux standard socket interface,get rid of the limitation of the Linux kernel network protocol stack,and improve the network performance.

关 键 词：套接字 远程内存直接访问 协议加速 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]