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ACM Transactions on Computer Systems (TOCS)
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Conference proceedings on Applications, technologies, architectures, and protocols for computer communications
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IEEE Transactions on Computers
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OSDI '99 Proceedings of the third symposium on Operating systems design and implementation
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IEEE Parallel & Distributed Technology: Systems & Technology
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ICDCS '98 Proceedings of the The 18th International Conference on Distributed Computing Systems
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WINSYM'98 Proceedings of the 2nd conference on USENIX Windows NT Symposium - Volume 2
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In this paper, we describe an approach to build high-performance, commercial distributed object systems over system area networks (SANs) with user-level networking. The specific platforms we use in this study are the Virtual Interface Architecture (VIA) and Microsoft's Distributed Component Object Model (DCOM). We give a detailed functional and performance analysis of DCOM and apply optimizations at several layers to take full advantage of modern high-speed networks. Our optimizations preserve the full set of DCOM features including security, alternative threading models, and Microsoft Transaction Server (MTS). Through extensive runtime, transport and marshaling optimization, our system achieves round-trip latencies of 72 microseconds for DCOM calls and 174 microseconds for MTS calls, and an application bandwidth of 86.1 megabytes per second. We also examine the performance gains in real applications.