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On overload control through queue length for web servers

Jianhua, Cao and Nyberg, Christian LU (2002) In Sixteenth Nordic Teletraffic Seminar NTS 16 : Helsinki University of Technology, Espoo August 21-23, 2002 : proceedings (Report / Helsinki University of Technology, Networking Laboratory)
Abstract
We investigate the performance of overload control through queue length for two different web server architectures. Both of them use finite queue lengths to prevent servers from being overloaded. One architecture prioritizes requests from established sessions while the other treats all requests equally. First, we introduce queueing models for these two systems. Then, we define and explain a new web server performance metric that is a function of session throughput, error rate for connection within sessions and average request response time. Finally, we use simulation to evaluate the performance of these two types of web servers. The result suggests that the benefit of request prioritization is noticeable only when the capacities of the... (More)
We investigate the performance of overload control through queue length for two different web server architectures. Both of them use finite queue lengths to prevent servers from being overloaded. One architecture prioritizes requests from established sessions while the other treats all requests equally. First, we introduce queueing models for these two systems. Then, we define and explain a new web server performance metric that is a function of session throughput, error rate for connection within sessions and average request response time. Finally, we use simulation to evaluate the performance of these two types of web servers. The result suggests that the benefit of request prioritization is noticeable only when the capacities of the sub-systems match each other. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Sixteenth Nordic Teletraffic Seminar NTS 16 : Helsinki University of Technology, Espoo August 21-23, 2002 : proceedings (Report / Helsinki University of Technology, Networking Laboratory)
editor
Lassila, Pasi; Nyberg, Eeva; Virtamo, Jorma; ; and
publisher
Helsinki University of Technology, Networking Laboratory
ISSN
1458-0322
language
English
LU publication?
yes
id
87935f36-e6c7-4163-8313-f4f738ad2ff3 (old id 532493)
date added to LUP
2007-09-20 09:43:33
date last changed
2016-04-16 04:34:36
@inproceedings{87935f36-e6c7-4163-8313-f4f738ad2ff3,
  abstract     = {We investigate the performance of overload control through queue length for two different web server architectures. Both of them use finite queue lengths to prevent servers from being overloaded. One architecture prioritizes requests from established sessions while the other treats all requests equally. First, we introduce queueing models for these two systems. Then, we define and explain a new web server performance metric that is a function of session throughput, error rate for connection within sessions and average request response time. Finally, we use simulation to evaluate the performance of these two types of web servers. The result suggests that the benefit of request prioritization is noticeable only when the capacities of the sub-systems match each other.},
  author       = {Jianhua, Cao and Nyberg, Christian},
  booktitle    = {Sixteenth Nordic Teletraffic Seminar NTS 16 : Helsinki University of Technology, Espoo August 21-23, 2002 : proceedings (Report / Helsinki University of Technology, Networking Laboratory)},
  editor       = {Lassila, Pasi and Nyberg, Eeva and Virtamo, Jorma},
  issn         = {1458-0322},
  language     = {eng},
  publisher    = {Helsinki University of Technology, Networking Laboratory},
  title        = {On overload control through queue length for web servers},
  year         = {2002},
}