@TechReport{Chen03b,
	author = 	"Xuan Chen and John Heidemann",
	title = 	"Experimental Evaluation of an Adaptive Flash Crowd Protection System",
	institution = 	"USC/Information Sciences Institute",
	year = 		2003,
	month = jul,
	sortdate = 		"2003-07-01",
	project = "ant, saman, conser",
	jsubject =  "www",
	number =	"IIS-TR-2003-573",
	jlocation =	"johnh: folder: xxx",
	jlocation =	"johnh: pafile",
	keywords =	"NEWS, implementation, admission control",
	url =		"https://ant.isi.edu/%7ejohnh/PAPERS/Chen03b.html",
	pdfurl =	"https://ant.isi.edu/%7ejohnh/PAPERS/Chen03b.pdf",
	copyrightholder = "authors",
	myorganization =	"USC/Information Sciences Institute",
	abstract = "
\emph{Network early warning system} (NEWS) is an adaptive admission
control scheme that protects server and networks from overloading
during flash crowds, and maintains high performance for accepted
requests. Unlike other admission control systems, NEWS regulates
\emph{requests} by observing \emph{response} performance,
automatically adapting to changing traffic mixes. We have previously
studied NEWS through simulation; this paper presents an implementation
of NEWS on a Linux-based router and evaluates that implementation in
testbed experiments with HTTP server log recorded during a flash
crowd.  This paper has three contributions. First, we use the
implementation to evaluate scenarios not considered in simulation. In
addition to validating our previous simulation results in
network-limited scenario quantitatively, we further consider server
memory-limited scenario, confirming that NEWS is effective in both
cases. Second, we evaluate the run-time cost of NEWS traffic
monitoring in practice, and find that it consumes little CPU time and
relatively small memory. Finally, we extend core NEWS algorithms to
include hot-spot identification function to protect bystander traffic
from flash crowds efficiently.
",
}

{"_id":"obBbRH5pLomwEYwKj","bibbaseid":"chen-heidemann-experimentalevaluationofanadaptiveflashcrowdprotectionsystem-2003","author_short":["Chen, X.","Heidemann, J."],"bibdata":{"bibtype":"techreport","type":"techreport","author":[{"firstnames":["Xuan"],"propositions":[],"lastnames":["Chen"],"suffixes":[]},{"firstnames":["John"],"propositions":[],"lastnames":["Heidemann"],"suffixes":[]}],"title":"Experimental Evaluation of an Adaptive Flash Crowd Protection System","institution":"USC/Information Sciences Institute","year":"2003","month":"July","sortdate":"2003-07-01","project":"ant, saman, conser","jsubject":"www","number":"IIS-TR-2003-573","jlocation":"johnh: pafile","keywords":"NEWS, implementation, admission control","url":"https://ant.isi.edu/%7ejohnh/PAPERS/Chen03b.html","pdfurl":"https://ant.isi.edu/%7ejohnh/PAPERS/Chen03b.pdf","copyrightholder":"authors","myorganization":"USC/Information Sciences Institute","abstract":"\\emphNetwork early warning system (NEWS) is an adaptive admission control scheme that protects server and networks from overloading during flash crowds, and maintains high performance for accepted requests. Unlike other admission control systems, NEWS regulates \\emphrequests by observing \\emphresponse performance, automatically adapting to changing traffic mixes. We have previously studied NEWS through simulation; this paper presents an implementation of NEWS on a Linux-based router and evaluates that implementation in testbed experiments with HTTP server log recorded during a flash crowd. This paper has three contributions. First, we use the implementation to evaluate scenarios not considered in simulation. In addition to validating our previous simulation results in network-limited scenario quantitatively, we further consider server memory-limited scenario, confirming that NEWS is effective in both cases. Second, we evaluate the run-time cost of NEWS traffic monitoring in practice, and find that it consumes little CPU time and relatively small memory. Finally, we extend core NEWS algorithms to include hot-spot identification function to protect bystander traffic from flash crowds efficiently. ","bibtex":"@TechReport{Chen03b,\n\tauthor = \t\"Xuan Chen and John Heidemann\",\n\ttitle = \t\"Experimental Evaluation of an Adaptive Flash Crowd Protection System\",\n\tinstitution = \t\"USC/Information Sciences Institute\",\n\tyear = \t\t2003,\n\tmonth = jul,\n\tsortdate = \t\t\"2003-07-01\",\n\tproject = \"ant, saman, conser\",\n\tjsubject = \"www\",\n\tnumber =\t\"IIS-TR-2003-573\",\n\tjlocation =\t\"johnh: folder: xxx\",\n\tjlocation =\t\"johnh: pafile\",\n\tkeywords =\t\"NEWS, implementation, admission control\",\n\turl =\t\t\"https://ant.isi.edu/%7ejohnh/PAPERS/Chen03b.html\",\n\tpdfurl =\t\"https://ant.isi.edu/%7ejohnh/PAPERS/Chen03b.pdf\",\n\tcopyrightholder = \"authors\",\n\tmyorganization =\t\"USC/Information Sciences Institute\",\n\tabstract = \"\n\\emph{Network early warning system} (NEWS) is an adaptive admission\ncontrol scheme that protects server and networks from overloading\nduring flash crowds, and maintains high performance for accepted\nrequests. Unlike other admission control systems, NEWS regulates\n\\emph{requests} by observing \\emph{response} performance,\nautomatically adapting to changing traffic mixes. We have previously\nstudied NEWS through simulation; this paper presents an implementation\nof NEWS on a Linux-based router and evaluates that implementation in\ntestbed experiments with HTTP server log recorded during a flash\ncrowd. This paper has three contributions. First, we use the\nimplementation to evaluate scenarios not considered in simulation. In\naddition to validating our previous simulation results in\nnetwork-limited scenario quantitatively, we further consider server\nmemory-limited scenario, confirming that NEWS is effective in both\ncases. Second, we evaluate the run-time cost of NEWS traffic\nmonitoring in practice, and find that it consumes little CPU time and\nrelatively small memory. Finally, we extend core NEWS algorithms to\ninclude hot-spot identification function to protect bystander traffic\nfrom flash crowds efficiently.\n\",\n}\n\n\n","author_short":["Chen, X.","Heidemann, J."],"bibbaseid":"chen-heidemann-experimentalevaluationofanadaptiveflashcrowdprotectionsystem-2003","role":"author","urls":{"Paper":"https://ant.isi.edu/%7ejohnh/PAPERS/Chen03b.html"},"keyword":["NEWS","implementation","admission control"],"metadata":{"authorlinks":{}}},"bibtype":"techreport","biburl":"https://bibbase.org/f/dHevizJoWEhWowz8q/johnh-2023-2.bib","dataSources":["YLyu3mj3xsBeoqiHK","fLZcDgNSoSuatv6aX","fxEParwu2ZfurScPY","7nuQvtHTqKrLmgu99"],"keywords":["news","implementation","admission control"],"search_terms":["experimental","evaluation","adaptive","flash","crowd","protection","system","chen","heidemann"],"title":"Experimental Evaluation of an Adaptive Flash Crowd Protection System","year":2003}