Software Reliability

computer software program Engineering Course Work 2 package dependability CONTENTS 1. Introduction 2. dependableness specify 3. Reliability metrics or measurements 3.1. POFOD ? Probability of disappointment on pauperization 3.2. ROCOF ? Rate of tribulation occurrence 3.3. MTTF ? Mean while to failure 3.4. Availability 4. How to minimise the chance of failure? 4.1. scheduling for Reliability 4.1.1. Program code 4.1.2. Program language features 4.1.3. disfigurement leeway 4.1.4. Fault Recovery 5. Summary 6. Bibliography 1. Introduction As estimator applications are becoming increasingly complex and diverse they appear in almost every area of life. It is increasingly unmistakable that the most important dynamic characteristic of software is its dependability. The circumstanceinationination reliability can also be linked to the term dependability. For the purpose of this report I will concentrate on reliability. 2. Reliability Defined Inform in ally, the reliability of a software brass is a measure of how well it provides the serve expected of it by its users. However the formal definition of reliability is much harder to define. Software reliability metrics such as ?probability of failure on demand may be habituate but they do not take into account the essential nature of software failures. Users in general do not consider all services to be of the same richness and a political machinecass maybe viewed as unreliable by one user and not by another.

For example, say a constitution was used to control the gears on a car but failed to fix under a single set(p) of extremely old circumstances. If the car crashed because of these failure conditions occurred, driver! s of other cars would count on the software as unreliable. On the other hand, say a different corresponding software system provided some optic indication of its actions to the driver. scoop up this failed once every 4 weeks in a sure way without the main system function being modify and other indicators showed that the controlled system was operative normally. Despite the frequent failures, drivers would not consider... If you want to get a full essay, order it on our website: OrderEssay.net

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