FILE TRANSFER SPEEDS OVER HTTP AND FTP Yibiao Li 06/01/2009 Christmas Meeting 2008/09.

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Presentation transcript:

FILE TRANSFER SPEEDS OVER HTTP AND FTP Yibiao Li 06/01/2009 Christmas Meeting 2008/09

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 interlinked text documents (hypertext) led to the establishment of the World Wide Web.  Both protocols support file transfer over network. Christmas Meeting 2008/09

FTP and HTTP Christmas Meeting 2008/09

How to Compare  Fair environment  Low level programming  Choose different time, places and servers to do the test Christmas Meeting 2008/09

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

Fair Environment Christmas Meeting 2008/09

Local Network Test Christmas Meeting 2008/09

Grid Network – HTCP vs GridFTP Christmas Meeting 2008/09

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: (50000~50100)  Both support parallel file transfer

Test Results – 1 thread, 100M Christmas Meeting 2008/09

Test Results – 1 thread, 100M Christmas Meeting 2008/09

Test Results – 3 threads, 100M Christmas Meeting 2008/09

Test Results – 3 threads, 100M Christmas Meeting 2008/09

Test Results – 5 threads, 100M Christmas Meeting 2008/09

Test Results – 5 threads, 100M Christmas Meeting 2008/09

Test Results – 7 threads, 100M Christmas Meeting 2008/09

Test Results – 7 threads, 100M Christmas Meeting 2008/09

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

Happy New Year Christmas Meeting 2008/09