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Control-theoretic Analysis of Admission Control Mechanisms for Web Server Systems

M. Kihl, A. Robertsson, M. Andersson, B. Wittenmark
2007 World wide web (Bussum)  
In this paper we model an Apache web server as a GI/G/1-system and then design a PI-controller, commonly used in automatic control, for the server.  ...  This paper presents how admission control mechanisms can be designed with a combination of queueing theory and control theory.  ...  We have shown that the control theoretic model can be used when designing admission control mechanisms for the Apache web server.  ... 
doi:10.1007/s11280-007-0030-0 fatcat:bjbe2m2lxzcstgsoffsmuygj7e

Modeling and design of admission control mechanisms for web servers using nonlinear control theory

Mikael Andersson, Maria Kihl, Anders Robertsson, Robert D. van der Mei, Frank Huebner
2003 Performance and Control of Next-Generation Communications Networks  
By analysing queueing systems with control theoretic methods, good admission control mechanisms can be designed for web server systems. In this paper we model an Apache web server as a GI/G/1-system.  ...  Web sites are exposed to high rates of incoming requests. Since web sites are sensitive to overload, admission control mechanisms are often implemented.  ...  In section 4, we describe a non-linear control theoretic model of an admission control mechanism for a web server.  ... 
doi:10.1117/12.509281 fatcat:y5lpakzrercftcbfv323nleyua

Admission control for Web server systems - design and experimental evaluation

A. Robertsson, B. Wittenmark, M. Kihl, M. Andersson
2004 2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601)  
In this paper we investigate, from a control point of view, the nonlinear discrete-time modeling of a server system, and the analysis and design of load control mechanisms based upon this model.  ...  Verification of the server model behavior with respect to queue theoretic models are made and the load control mechanisms are implemented on an Apache web server and experimentally evaluated.  ...  ANALYSIS OF CLOSED LOOP SYSTEM The stability properties of the admission control mechanism for load control will be analyzed in this Section.  ... 
doi:10.1109/cdc.2004.1428685 fatcat:kymdnvkozjfkvhcs7mdixr3g7y

Control Theoretic Modelling and Design of Admission Control Mechanisms for Server Systems [chapter]

Maria Kihl, Anders Robertsson, Björn Wittenmark
2004 Lecture Notes in Computer Science  
The admission control mechanism is an important part of many communication systems.  ...  In this paper we investigate load control mechanisms for server systems, that is systems that may be modelled as queueing systems.  ...  In [4] a PI-controller is used in an admission control mechanism for a web server. However, no analysis is presented on how to design the controller parameters.  ... 
doi:10.1007/978-3-540-24693-0_120 fatcat:xiyvubrtjjf47pwx2etypasceq

Performance modelling and control of server systems using non-linear control theory [chapter]

Maria Kihl, Anders Robertsson, Björn Wittenmark
2003 Teletraffic science and engineering  
In this paper, we model and analyse admission control mechanisms for server systems with control theoretic methods. We develop a nonlinear stochastic control theoretic model of a GI/G/1-system.  ...  All service control nodes, for example SCPs, HLRs, and MSCs, are constructed as a server system with one or more servers that process incoming requests.  ...  In [3] a PI-controller is used in a admission control mechanism for a web server. However, no analysis is presented on how to design the controller parameters.  ... 
doi:10.1016/s1388-3437(03)80264-0 fatcat:4iiit35glvbbdaacmnqlhaz2ti

A Session-Based Adaptive Admission Control Approach for Virtualized Application Servers

Adnan Ashraf, Benjamin Byholm, Ivan Porres
2012 2012 IEEE Fifth International Conference on Utility and Cloud Computing  
This paper presents a session-based adaptive admission control approach for virtualized application servers called ACVAS (adaptive Admission Control for Virtualized Application Servers).  ...  ACVAS uses measured and predicted resource utilizations of a server to make admission control decisions for new user sessions.  ...  Adnan Ashraf was partially supported by a doctoral scholarship from the Higher Education Commission (HEC) of Pakistan.  ... 
doi:10.1109/ucc.2012.22 dblp:conf/ucc/AshrafBP12 fatcat:q67gy664u5gzldp2x44czazsvq

Ensuring latency targets in multiclass web servers

V. Kanodia, E.W. Knightly
2003 IEEE Transactions on Parallel and Distributed Systems  
For example, if the server provides class isolation (i.e., a minimum fraction of system resources independent of other classes), yet also allows a class to utilize unused resources from other classes,  ...  Second, session admission control can protect classes from performance degradation due to overload.  ...  This paper was presented in part at the Eighth IEEE/IFIP International Workshop on Quality of Service, Pittsburgh, June 2000 [14] .  ... 
doi:10.1109/tpds.2003.1167373 fatcat:d7zap7fd3zhndgtfjfgrdv5jne

A survey on performance management for internet applications

Jordi Guitart, Jordi Torres, Eduard Ayguadé
2010 Concurrency and Computation  
, service degradation, control theoretic approaches, works using queuing models, observation-based approaches that use runtime measurements, and overall approaches combining several mechanisms.  ...  For this reason, recent research has comprehensively explored mechanisms for managing the performance of these applications, with special focus on dealing with overload situations and providing QoS guarantees  ...  ACKNOWLEDGEMENTS This work is supported by the Ministry of Science and Technology of Spain and the European Union (FEDER funds) under contract TIN2007-60625 and by the BSC (Barcelona Supercomputing Center  ... 
doi:10.1002/cpe.1470 fatcat:bxlovt3kf5hyvbu4hrjdpamvra

Prediction-based VM provisioning and admission control for multi-tier web applications

Adnan Ashraf, Benjamin Byholm, Ivan Porres
2016 Journal of Cloud Computing: Advances, Systems and Applications  
Multiple web applications with Proactive scaling (CRAMP), and a session-based adaptive admission control approach called adaptive Admission Control for Virtualized Application Servers (ACVAS).  ...  We present a prediction-based, cost-efficient Virtual Machine (VM) provisioning and admission control approach for multi-tier web applications.  ...  [32] proposed an admission control mechanism for a web server system with control theoretic methods.  ... 
doi:10.1186/s13677-016-0065-9 fatcat:xuebq22gyvbmjmkheftxlamavu

Modeling and performance analysis of QoS-aware load balancing of Web-server clusters

Zhiguang Shan, Chuang Lin, Dan C. Marinescu, Yang Yang
2002 Computer Networks  
This paper introduces mechanisms to correlate contents and priorities of incoming HTTP requests used for server process scheduling with the load balancing policies for Web-server clusters.  ...  This approach enables both load balancing and Web quality of service (QoS).  ...  Other mechanisms and policies for Web QoS, such as operating system control [9], server-side application-level-only mechanisms [10], Web content adaptation for server resource man- They classify server  ... 
doi:10.1016/s1389-1286(02)00253-0 fatcat:56malcyhnrfnxlia4fqev32rda

Session-based admission control: a mechanism for peak load management of commercial Web sites

L. Cherkasova, P. Phaal
2002 IEEE transactions on computers  
We show that a web server augmented with the admission control mechanism is able to provide a fair guarantee of completion, for any accepted session, independent of a session length.  ...  To improve web QoS for commercial web servers, we introduce a session-based admission control (SBAC) to prevent a web server from becoming overloaded and to ensure that longer sessions can be completed  ...  for admission control mechanism.  ... 
doi:10.1109/tc.2002.1009151 fatcat:nhpfwpr2njdithdyfykiir4pci

Simulating and Modeling Secure Web Applications [chapter]

Ramon Nou, Jordi Guitart, Jordi Torres
2006 Lecture Notes in Computer Science  
mechanisms to the servers to improve their performance without the necessity of using the real system.  ...  In this paper we propose the modeling and simulation of complex systems, such as application servers, in order to alleviate this limitation.  ...  Thanks to Lídia Montero from Dept. of Statistics and Operations Research, UPC for her help. For additional information please visit the Barcelona eDragon Research Group web site [17] .  ... 
doi:10.1007/11758501_16 fatcat:hukng7br75cqrj57o5rlp4wz7m

Adversarial exploits of end-systems adaptation dynamics

Mina Guirguis, Azer Bestavros, Ibrahim Matta, Yuting Zhang
2007 Journal of Parallel and Distributed Computing  
Using detailed models, we instantiate this general framework for some of the aforementioned end-system adaptation mechanisms, focusing on admission controllers and load balancers.  ...  Today, these mechanisms are incorporated in most scalable end-systems through the use of one or more component subsystems such as admission controllers, traffic shapers, content transcoders, QoS Controllers  ...  Due to the wide deployment of web servers in the current Internet, we used a web server as an example of an end-system functionality that is subject to admission control.  ... 
doi:10.1016/j.jpdc.2006.10.005 fatcat:qjn76hdrafbjddrlqdwrhah3ee

Pricing-based strategies for autonomic control of web servers for time-varying request arrivals

Y CHEN, A DAS, N GAUTAM, Q WANG, A SIVASUBRAMANIAM
2004 Engineering applications of artificial intelligence  
web server.  ...  The conclusion is that the web server revenue can be significantly increased by appropriately turning away customers via pricing or admission control mechanisms, and this can be done autonomically in the  ...  Acknowledgements This research is partially supported by NSF grant ACI-0325056 "Data-driven Autonomic Performance Modulation for Servers".  ... 
doi:10.1016/s0952-1976(04)00112-5 fatcat:eywikk32vvbwdh6qnuobb3abj4

Pricing-based strategies for autonomic control of web servers for time-varying request arrivals

Yiyu Chen, Amitayu Das, Natarajan Gautam, Qian Wang, Anand Sivasubramaniam
2004 Engineering applications of artificial intelligence  
web server.  ...  The conclusion is that the web server revenue can be significantly increased by appropriately turning away customers via pricing or admission control mechanisms, and this can be done autonomically in the  ...  Acknowledgements This research is partially supported by NSF grant ACI-0325056 "Data-driven Autonomic Performance Modulation for Servers".  ... 
doi:10.1016/j.engappai.2004.09.001 fatcat:4hjb6rj73rgtjlom744dy6aci4
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