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FILE TRANSFER SPEEDS OVER HTTP AND FTP Yibiao Li 06/01/2009 Christmas Meeting 2008/09
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FTP and HTTP File Transfer Protocol (FTP) is a network protocol used to transfer data from one computer to another through a network such as the Internet. Hypertext Transfer Protocol (HTTP) is a communications protocol. Its use for retrieving inter- linked text documents (hypertext) led to the establishment of the World Wide Web. Both protocols support file transfer over network. Christmas Meeting 2008/09
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FTP and HTTP Christmas Meeting 2008/09
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How to Compare Fair environment Low level programming Choose different time, places and servers to do the test Christmas Meeting 2008/09
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Fair Environment Christmas Meeting 2008/09 HTTP and FTP server on same computer Downloading from same client computer Multithreading technical Low-level C programming Same computer resource, same network status
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Fair Environment Christmas Meeting 2008/09
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Local Network Test Christmas Meeting 2008/09
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Grid Network – HTCP vs GridFTP Christmas Meeting 2008/09
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Grid Network – HTCP vs GridFTP Christmas Meeting 2008/09 HTCP is a set of file transport tools for grid network, based on HTTP, developed by a team led by Dr Andrew McNab GridFTP is considered an extension of FTP for grid users, developed by Globus.org HTCP port: 80 GridFTP port: 2811 + (50000~50100) Both support parallel file transfer
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Test Results – 1 thread, 100M Christmas Meeting 2008/09
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Test Results – 1 thread, 100M Christmas Meeting 2008/09
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Test Results – 3 threads, 100M Christmas Meeting 2008/09
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Test Results – 3 threads, 100M Christmas Meeting 2008/09
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Test Results – 5 threads, 100M Christmas Meeting 2008/09
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Test Results – 5 threads, 100M Christmas Meeting 2008/09
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Test Results – 7 threads, 100M Christmas Meeting 2008/09
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Test Results – 7 threads, 100M Christmas Meeting 2008/09
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Conclusions Under the same network conditions, HTTP is faster than FTP in average Under the same network conditions, HTCP is faster than GridFTP Because most computers enable HTTP port(80,443), so HTCP is easy to go through firewall. But in practice, some well programming FTP tools may be faster than some HTTP download tools. Christmas Meeting 2008/09
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Happy New Year Christmas Meeting 2008/09
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