Accession Number:

ADA455227

Title:

Performance Analysis of a Controlled Database Unit Subject to Decision Errors and Control Delays

Descriptive Note:

Conference paper

Corporate Author:

BINGHAMTON UNIV NEW YORK DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Report Date:

2006-07-12

Pagination or Media Count:

7.0

Abstract:

This paper extends the performance analysis of a controlled database unit studied in Wu, Metzler, and Linderman 2005 to include cases in which errors and delays can occur in state-based control actions as a result of uncertainty in the knowledge of the system state. The paper details the ways in which such errors and delays are captured by augmenting the state space in the Markov model of the database unit. State variable feedback is used to activate the process of restoration upon the failure of one of the database servers in the unit. The performance of the database is evaluated in terms of the resulting mean time to unit failure, the steady state availability, the expected response time, and the service overhead of the database unit. All performance measures are examined with respect to the likelihood of decision error and the amount of control action delay.

Subject Categories:

  • Statistics and Probability
  • Operations Research
  • Computer Hardware
  • Computer Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE