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학술대회 A Network I/O Architecture for Terminal-Initiated Traffics in an Ubiquitous Service Server
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박경, 오수철, 김성운, 정용화
International Conference on Information Networking (ICOIN) 2007 (LNCS 5200), v.5200, pp.161-170
In ubiquitous environment, terminal-initiated traffics(e.g., sensor data streams) will become more popularized than human-initiated traffics(e.g., web browsing, file transfer, and media streaming). The characteristics of the terminal-initiated traffics can be described as the streams of small sized packets with the large number of simultaneous connections. Thus, an ubiquitous service server will suffer from the burden of the terminal-initiated traffics since the per-packet-cost of a CPU will increase proportionally with the number of terminals. In this paper, we propose Latona architecture that offloads not only TCP/IP processing but also parts of socket processing from a host to minimize the per-packet-cost of a CPU in a Linux server. Based on the experimental results, the Latona kernel could save 50% and 79% of the kernel execution time of send() and recv() for 32 bytes transfer in the legacy TCP/IP stack. The packet-per-second were 21.9K and 18.3K for send() and recv(),respectively. The bandwidth increased as the size of payload increased. The profile of detail execution time showed that the bottleneck of the Latona was for handling the socket and the TCP in Latona hardware. © 2008 Springer Berlin Heidelberg.
KSP 제안 키워드
File Transfer, I/O architecture, Media streaming, Sensor data streams, Ubiquitous environments, Web browsing, execution time, ubiquitous service