Dependability Metrics: Gi-Dagstuhl Research Seminar, Dagstuhl Castle, Germany, October 5 - November 1, 2005, Advanced Lectures

ISBN-13: 9783540689461 / Angielski / Miękka / 2008 / 305 str.

Irene Eusgeld

Opis

With the growingubiquity of computing systems it is essentialthat we canplace reliance on the services they deliver. This is particularly obvious and important in areas like aircraft avionics, global ?nancial transaction processing, or nuclear power plant control where human lives or large ?nancial values are at stake. But also the worldwide daily nuisances of computer viruses or data corruptions caused by crashing operating systems collectively impose high costs on society, which are beginning to become economically relevant. Within computer science, the termdependability has been introduced as a general term to cover all critical quality aspects of computing systems. Foll- ing the terminology of Laprie 26, 293], a system is dependable if trust can justi?ably be placed in the service it delivers (we will de?ne dependability and related terms more precisely later in this book). In the early days of computer science, researchers thought thatprogram correctness was the key to depe- ability meaning that a programalways terminates and satis?es its postcondition if it is started in a state where its precondition holds. Today we knowthat many other factors in?uence the well-functioning of a computer system. Examples of these factors are: Hardware reliability: The occurrence of hardware faults, which cannot be neglected in critical systems. Non-functional properties: The growingimportance of properties which c- not be expressed so easily as pre- and postconditions. As an example, c- sider the performance requirement that the averageresponse time should be below some value."

Spis treści

to Dependability Metrics.- to Dependability Metrics.- I Foundations.- On Metrics and Measurements.- Validation of Predictions with Measurements.- Consistent Metric Usage: From Design to Deployment.- Basic and Dependent Metrics.- Goal, Question, Metric.- Quality of Service Modeling Language.- Markov Models.- II Reliability Metrics.- Hardware Reliability.- Software Reliability.- III Security Metrics.- to Security Metrics.- Cryptographic Attack Metrics.- Security Measurements and Metrics for Networks.- Industrial Approaches and Standards for Security Assessment.- Economic Security Metrics.- Human Factors.- IV Performance Metrics.- to Performance Metrics.- Performance-Related Metrics in the ISO 9126 Standard.- Analytical Performance Metrics.- Performance Metrics in Software Design Models.- Measuring Performance Metrics: Techniques and Tools.- Performance Metrics for Specific Domains.- V Overlapping Metrics.- to Overlapping Attributes.- Performability.- Reliability vs. Security: A Subjective Overview.

Blurb

With the growing ubiquity of computing systems, it is essential that we can rely on the services they deliver. Justifying reliance in computer systems requires scientific techniques to derive evidence from given systems or predict such evidence. This tutorial book gives an overview of the current state of the art in measuring the different aspects of dependability of systems: reliability, security and performance.

The main impulse for this dependability metrics project resulted from a research seminar, held at Schloss Dagstuhl, Germany, in October/November 2005. The 25 chapters, based on the outcome of the research seminar, are organized in five parts on foundations, reliability metrics, security metrics, performance metrics, and overlapping metrics. The final part shows that only a combined consideration of important dependability attributes will lead to the design objective: the development of systems we can really trust.