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引用次数: 21
摘要
Internet TCP/IP协议套件是第一个用于基于ATM的网络的高级协议栈。高速网络恢复了终端系统作为通信路径瓶颈的地位。我们将展示主机架构和主机网络接口对于内存到内存的TCP吞吐量是如何至关重要的。此外，发送和接收系统调用中的TCP最大窗口大小和用户数据大小等可配置参数会影响段流和吞吐量性能。我们介绍了在基于Sparc2和Sparc10的机器上对FORE Systems的两代atm卡进行的测量。第一代卡片是基于可编程I/O的。第二代卡在DMA上。为了解释吞吐量特征的变化，我们在网络驱动程序中放置了小型优化探针，以记录TCP连接上的段流。
TCP/IP behavior in a high-speed local ATM network environment
The Internet TCP/IP protocol suite is the first higher-level protocol stack to be used on ATM based networks. High-speed networks reinstate the end-system as the communication path bottleneck. We show how the host architecture and host network interface are crucial for memory-to-memory TCP throughput. In addition, configurable parameters like the TCP maximum window size and the user data size in the send and receive system calls influence the segment flow and throughput performance. We present measurements done on Sparc2 and Sparc10 based machines for both generations of ATM-cards from FORE Systems. The first generation cards are based on programmed I/O. The second generation cards on DMA. To explain the variations in the throughput characteristics, we put small optimized probes in the network driver to log the segment flow on the TCP connections.<>
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