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Lee Hyung-Bong;Jeong Yeon-Chul;Kweon Ki-Hyeon
- The KIPS Transactions:PartC
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- v.12C no.1 s.97
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- pp.147-156
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- 2005
CGI is a standard interface rule between web server and gateway devised for the gateway's standard output to replace a static web document in UNIX environment. So, it is common to use standard I/O statements provided by the programming language for the CGI gateway. But the standard I/O mechanism is one of buffer strategies that are designed transparently to operating system and optimized for generic cases. This means that it nay be useful to apply another optimization to the standard I/O environment in CGI gateway. In this paper, we introduced standard output method and file output method as the two output optimization areas for CGI gateways written in C language in the UNIX/LINUX systems, and applied the proposed methods of each area to Debian LINUX, IBM AIX, SUN Solaris, Digital UNIX respectively. Then we analyzed the effect of them focused on execution time. The results were different from operating system to operating system. Compared to normal situation, the best case of standard output area showed about $10{\%}$ improvement and the worst case showed $60{\%}$ degradation in file output area where some performance improvements were expected.
https://doi.org/10.3745/KIPSTC.2005.12C.1.147 인용 PDF KSCI

Hur Chang-Wu;Kim Nam-Woo
- Journal of the Korea Institute of Information and Communication Engineering
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- v.10 no.7
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- pp.1259-1265
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- 2006
In this paper, we propose a combined synthetic algorithm of the logic level for high speed FPGA design. The algorithm divides critical path to reduce delay time and generates a circuit which the divided circuits execute simultaneously. This kernel selection algorithm is made by C-langage of SUN UNIX. We compare this with the existing FlowMap algorithm. This proposed algorithm shows result on 33.3% reduction of delay time by comparison with the existing algorithm.
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