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USENIX Technical Program - Paper - Proceedings of the USENIX Annual Technical Conference, January 6-10, 1997, Anaheim, California, USA     [Technical Program]



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High-Performance Local Area Communication With Fast Sockets

Steven H. Rodrigues

Thomas E. Anderson

David E. Culler

University of California at Berkeley
Berkeley, CA 94720

Abstract:

Modern switched networks such as ATM and Myrinet enable low-latency, high-bandwidth communication. This performance has not been realized by current applications, because of the high processing overheads imposed by existing communications software. These overheads are usually not hidden with large packets; most network traffic is small. We have developed Fast Sockets, a local-area communication layer that utilizes a high-performance protocol and exports the Berkeley Sockets programming interface. Fast Sockets realizes round-trip transfer times of 60 microseconds and maximum transfer bandwidth of 33 MB/second between two UltraSPARC 1s connected by a Myrinet network. Fast Sockets obtains performance by collapsing protocol layers, using simple buffer management strategies, and utilizing knowledge of packet destinations for direct transfer into user buffers. Using receive posting, we make the Sockets API a single-copy communications layer and enable regular Sockets programs to exploit the performance of modern networks. Fast Sockets transparently reverts to standard TCP/IP protocols for wide-area communication.





Steve Rodrigues
Wed Nov 13 21:45:19 PST 1996

This paper was originally published in the USENIX Annual Technical Conference, January 6-10, 1997, Anaheim, California, USA
Last changed: 8 April 2002 ml
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