一个TCP套接字缓冲区自动调优守护进程

Shao Tao, L. Jacob, A. Ananda
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引用次数: 6

摘要

根据网络路径的带宽和往返时间,某些网络连接可能需要与其他网络连接不同的套接字缓冲区。然而,大多数TCP实现对所有连接使用默认的套接字缓冲区大小。这将导致低带宽、长往返时间网络路径的内核内存浪费,以及长时间网络路径的效率低下。为了解决这个问题,我们实现了一个TCP套接字缓冲区自动调优守护进程。它会根据每个连接的网络状态,周期性地将每个连接的套接字缓冲区大小调优到最优值,而不需要用户的干预,也不需要改变网络应用程序。调优守护进程可以在不同的机器上运行并相互通信,向远程守护进程发送调优请求并交换调优信息。实验结果表明,该守护进程能够提高网络应用的吞吐量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A TCP socket buffer auto-tuning daemon
Depending on the bandwidth and round trip time of a network path, certain network connections may need different socket buffers than others. However, most TCP implementations use default socket buffer size for all the connections. This leads to a wastage of kernel memory for low bandwidth, long round trip time network paths and inefficiency for long fat W. Rechard Stevens (1994) network paths. To tackle this problem, we implement a TCP socket buffer auto-tuning daemon. It will periodically tune the socket buffer size of each connection to an optimal value according to the network status of each connection, without the intervention of user or change of network application. The tuning daemon can run on different machines and communicate with each other, send tuning request to the remote daemon and exchange the tuning information. Experiment results are presented to show that this daemon can improve the throughput for network application.
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