C. Harvey. Performance Engineering as an Integral Part of System Design. British Telecom Technology Journal, 4(3):142--147, July 1986.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....designed and functionally tested before any attempt is made to determine its performance characteristics. Redesign of both, hardware and software, is costly and may cause late system delivery. Therefore, performance evaluation has to be integrated into the design process from the very beginning [46,31] (cf. Figure 1) The saw tooth curve schematically shows the system development process when temporal aspects are considered at a too late stage. Early integration of both functional and temporal behaviour in a unified methodology allows to diminish these setbacks and improves the design ....

C. Harvey. Performance engineering as an integral part of system design. Br. Telecom Technol. J., 4(3): 142--147, 1986. 49

....of systems with respect to their performance is a crucial aspect in the design cycle of concurrent information systems. Although huge efforts are often made to analyse and tune system performance, these efforts are usually isolated from contemporary hardware and software design methodology [15, 18, 28]. This insularity of performance analysis has numerous drawbacks. Most severe, it is unclear how to incorporate performance analysis into the early stages of a design, where substantial changes are still not too costly. In these design stages, system models are nowadays developed by means of ....

C. Harvey. Performance engineering as integral part of system design. Br. Telecom Techn. J., 4:142--147, 1986.

....a process algebra as a performance modelling paradigm has implications for each of these problems, as explained below. 2.2. 1 Integrating performance analysis into system design Several authors have pointed out the importance of the timely consideration of performance aspects of a planned system [25, 3, 21]. However, most have also highlighted the limited extent to which this occurs in practice. The process algebra style of system description is close to the way that designers think about systems, and is gaining acceptance as a design methodology [5, 43] particularly in the area of communication ....

C. Harvey. Performance Engineering as an Integral Part of System Design. British Telecom Technology Journal, 4(3):142--147, July 1986.

....analysis of systems with respect to their performance is a crucial aspect in the design cycle of concurrent information systems. Although huge e#orts are often made to analyse and tune system performance, these e#orts are usually isolated from contemporary hardware and software design methodology [15, 18, 28]. This insularity of performance analysis has numerous drawbacks. Most severe, it is unclear how to incorporate performance analysis into the early stages of a design, where substantial changes are still not too costly. In these design stages, system models are nowadays developed by means of ....

C. Harvey. Performance engineering as integral part of system design. Br. Telecom Techn. J., 4:142--147, 1986.

....dining philosopher problem. Keywords Software tools, process algebras, performance evaluation, Markov chains 1 INTRODUCTION The desirability of taking account of the performance aspects of a system in the early stages of its design has been widely recognized (Yemini et al. 1982, Ferrari 1986, Harvey 1986, Bochmann et al. 1988) Nevertheless, it often happens that a concurrent system is tested for efficiency only after it has been fully designed and tested for functionality. This results in two problems. On the one hand, the detection of poor performance causes the system to be designed again, so ....

Harvey, C. (1986) Performance Engineering as an Integral Part of System Design. BT Technology Journal, 4, 143--147.

....SPA by taking a specific production cell and constructing a performance model. KEYWORDS: performance modeling, stochastic process algebras, production cell design INTRODUCTION The performance modeling community has long advocated modeling the performance of systems during the design phase (see [1]) Problems with the performance of a proposed system can be identified at an early stage in the design, allowing remedial action to be taken. This approach is desirable since the costs of changing a design increase rapidly the closer the system is to an implementation. This aim of this work is to ....

C. Harvey. Performance engineering as an integral part of system design. BT Technology Journal, 4(3):143--147, July 1986.

....As an example, we describe the application of TwoTowers to the Lehmann Rabin randomized distributed algorithm for the dining philosopher problem. INTRODUCTION The desirability of taking account of the performance aspects of a system in the early stages of its design has been widely recognized [23, 10, 13, 7]. Nevertheless, it often happens that a concurrent system is tested for efficiency only after it has been fully designed and tested for functionality. This results in two problems. On the one hand, the detection of poor performance causes the system to be designed again, so the cost of the project ....

Harvey, C. (1986) Performance Engineering as an Integral Part of System Design. BT Technology Journal, 4, 143--147.

....information (hereafter, performance analysis) is often delayed until the system is completely implemented. However such a delay may cause high extra costs. To avoid waste of time and resources, performance analysis should be closely integrated in a design methodology with behavioural analysis [11]. Stochastic process algebras [10, 12, 3, 5] aim at maintaining the peculiar features of classical process algebras while extending them to deal with performance measures. Recently, a stochastic extension of calculus has been proposed as well [19] The language obtained is called stochastic ....

C. Harvey. Performance engineering as an integral part of system design. BTTechnologyJournal, 4(3):143--147, 1986.

.... of mobile agents is increasing the complexity of these systems (examples of languages supporting mobility are Java [10] Safe Tcl [9] Telescript [36] Facile [34] Obliq [5] As a consequence, the delay of performance evaluation after implementations could result in a great waste of resources [13]. In fact, a system that meets the behavioural requirements, but it performs too slowly, must be rejected. This restarts a new design phase with the subsequent implementation of new prototypes. A uniform and formal description of functional and quantitative aspects of the system under planning ....

C. Harvey. Performance engineering as an integral part of system design. BT Technology Journal, 4(3):143--147, 1986.

....the system must be rejected. Performance analysis is often delayed until the system is completely implemented. This delay may cause high extra costs. In order to avoid waste of time and resources, performance analysis should be closely integrated in a design methodology with functional analysis [15]. Due to the maturity of functional analysis in the field of process description languages, we mainly concentrate here on how quantitative analysis can be carried out using the same model for functional analysis. In this way, there is a correspondence by construction between the model for ....

C. Harvey. Performance engineering as an integral part of system design. BT Technology Journal, 4(3):143--147, 1986.

....of a system is now widely accepted, quantitative modelling is often disregarded until implementation is complete and the system is being tested. It is not unusual for a system to be fully designed and functionally tested before any attempt is made to determine its performance characteristics [13]. Several authors have pointed out the dangers of such a delay and advocated the close integration of performance modelling into a design methodology. Most have also highlighted the limited extent to which this occurs in practice [4, 25] In this paper we present an algebraic description technique ....

C. Harvey. Performance Engineering as an Integral Part of System Design. BT Technology Journal, 4(3):143--147, July 1986.

....errors or inefficiency. Performance results obtained from experiments conducted on the field confirmed the predictive simulative results. 1. Introduction The desirability of taking into account the performance aspects of a system in the early stages of its design has been widely recognized [YK82, Fer86, Har86, BV88]. Nevertheless, it often happens that a system is tested for efficiency only after it has been fully designed and tested for functionality. As a consequence, the detection of poor performance causes the system to be designed again, so the cost of the project increases. In order to cope with such a ....

C. Harvey, "Performance Engineering as an Integral Part of System Design", in BT Technology Journal 4:143-147, 1986

....the approach. Finally, the case study of the alternating bit protocol is presented to illustrate the adequacy of the approach. 1 Introduction The desirability of taking into account the performance aspects of a concurrent system in the early stages of its design has been widely recognized [YK82, Fer86, Har86, BV88]. Nevertheless, it often happens that a concurrent system is tested for efficiency only after it has been fully designed and tested for functionality. This results in two problems. On the one hand, the detection of poor performance causes the system to be designed again, so that the cost of the ....

C. Harvey, "Performance Engineering as an Integral Part of System Design", in BTTechnology Journal 4:143147, 1986

.... categories of attributes indispensable for the viability of any technical system: functionality, performance and economicity [Fer86] However, it is not unusual for a system to be fully designed and functionally tested before an attempt is made to determine its performance characteristics [Har86] Redesign of both hardware and software is usually the consequence; this is costly and may cause late system delivery. This is particularly true for real time systems and a dramatic misdesign of mobile communication ground stations has occurred only recently. This research is supported in ....

C. Harvey. Performance engineering as an integral part of system design. British Telecom Technology Journal, 4(3):143--147, July 1986.

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C. Harvey. Performance Engineering as an Integral Part of System Design. British Telecom Technology Journal, 4(3):142--147, July 1986.

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