265 software maintenance metrics

Software quality is the focus of a software project, from the perspective of the developer as much as the customer. Fix backlog is a workload statement for software maintenance. Software maintenance is classified into four types. She is the principal designer of the total metrics internationally renowned function point counting tool scope and a certified investment management facilitator. For the maintenance activities, metrics have been designed explicitly. Jun, 2016 when measuring these metrics, consider 3 things when it comes to improvement. Think twice before using the maintainability index arie. Departments throughout your organization, including maintenance, operations, materials management, planning and scheduling and purchasing, all play vital roles and contribute to the companys bottom line but most are unmeasured. Maintenance metrics basics 9 air force maintenance metrics the events required for it to succeed.

Ieee have proposed software maturity index smi, which provides indications relating to the stability of software product. It gives informed data on how effective organizations maintenance processes is running based on factors like equipment quality, performance, and availability. Extension of objectoriented metrics suite for software. Kpi library is a community for performance management professionals. An advanced platform to develop test software for domestic. Use kpi library to search for key performance indicators by process and industry, ask help or advice, and read articles written by independent experts. For longevity and scalability, software maintenance plays a crucial part in the entire software development life cycle. The regression models performed well in predicting adaptive maintenance effort as well as provide useful information for managers and maintainers. Even if a metric is not a measurement metrics are functions, while measurements are the numbers obtained by the application of metrics, often the two terms are used as synonyms. They allow you to trace results back to their roots so you can make better decisions and improve your operation in meaningful ways. Therefore, any project not involving a software development process is excluded, for example.

At that time two systems were supported and a software maintenance metrics program was established. In this general discussion of the development of software, the author. There are three main categories of maintenance metrics asset. Pam is a regular guest speaker on the topic of software metrics at numerous. The 60% maintenance costs come from making enhancements, which is something that makes the systems provide additional value 11, 50. Vowel i nasa johnson space center, houston, texas managers at the national aeronautics and space ad ministrations mission operations directorate at the johnson space center wanted to increase their in sight into the. For example, say that there is a standard for addressing a noncritical but unscheduled work orders. Software developers require information to understand the characteristics of systems, such as complexity and maintainability. The following metrics are more general in nature to the maintenance organization. Maintenance and reliability metrics key performance indicators. Maintenance consumes 40% to 80% of software costs and is therefore probably the most important phase of life cycle of software 11, 36, 50. The following metrics are therefore very important. Metrics for software maintenance information technology essay 1 introduction. Maintenance kpis key performance indicators and maintenance metrics.

As much as 7080% of the total ownership cost tco of the software can be attributed to maintenance costs alone. The machine is still functioning, but the operator has a concern and wants it checked before the next scheduled maintenance cycle. Todays facilities managers need to track data about all processes and operations to be certain they are making the best determinations, based on the most accurate information. Field service organizations need the right people in the field in front of their customers, streamlined processes that reduce cost and improve efficiency, and the right technology to automate their business. Key performance indicators in manufacturing plant maintenance. If maintenance overtime is trending up, it may be a sign that part of your process is slipping out of control. Overall equipment effectiveness oee oee is the measure of the productivity of a piece of equipment. Software maintenance organizations are no exception. Jan 23, 2019 for longevity and scalability, software maintenance plays a crucial part in the entire software development life cycle. Even if a metric is not a measurement metrics are functions, while measurements are the numbers obtained by the application of.

There is a difference between maintenance kpis and maintenance metrics. Software metrics attempt to uncover difficult or complex. The industry with the best average zacks rank would be considered the top industry 1 out of 265, which would place it in the top 1% of zacks ranked industries. When development of a software product is complete and it is released to the market, it enters the maintenance phase of its life cycle. Without a schedule, all the moving parts certainly would not come together efficiently. Keywords software metrics, halstead measure, maintainability, modifiability, software architecture, software deterioration. Jul 09, 2019 maintenance metrics translate action into numbers to give clarity on the performance of everyone and everything at your facility. You will get a quick measure of your maintenance program as well as identify early actions to take if the metrics are changing in a negative way. Classification of software metrics in software engineering. First, the columbus technology is introduced which allows us to analyze a large software system and to calculate the objectoriented metrics even for the largest systems encountered by us. Everything in maintenance revolves around humans and machines. Maintenance metrics 101 for datadriven maintenance fiix.

The significant benefit of tracking kpis is that missing the standard signals the need for change. This metrics describe the project characteristics and execution. Maintenance key performance indicators kpis or metrics. Software maintenance costs result from modifying your application to either support new use cases or update existing ones, along with the continual bug fixing after deployment.

Sjoberg department of informatics, university of oslo, p. The confounding effect of class size on the validity of objectoriented metrics. Software metrics massachusetts institute of technology. A solution to this problem is to build models to predict the maintenance process measures from software product measures like cohesion, coupling and complexity. There are several kpis what we call a quality model you can use to measure a software product quality. Extension of objectoriented metrics suite for software maintenance. Software metrics, an area of software engineering, is concerned with various. The cost of speed total metrics helping manage software. Applying software product metrics in software maintenance.

As the technical dimension of maintainability is a quality attribute of a system similar to security or safety research on software maintenance adopted many ideas from the broader field of software quality. Software maintenance is defined in the ieee standard for software maintenance, ieee 1219 ieee 1219, as the modification of a software product after delivery to correct faults, to improve performance or other attributes, or to adapt the product to a modified environment. This book is the second edition of the highly successful software metrics. Measuring the psychological complexity of software maintenance tasks. The software engineering community has proposed over two hundred software metrics. Studying supply and demand of software maintenance and evolution services alain april, phd department of software engineering, ets university 1100 notre dame west, montreal, canada alain. These characteristics can be used to improve the development and maintenance activities of the software. Due to changes in business structures over the years, it became necessary to find a better way to attend to customers. The maintainability index was introduced at the international conference on software maintenance in 1992. Maintenance overtime as a percentage of maintenance time.

Also known as maintenance overtime, this simple metric is a fair measure of the health of your maintenance organization. Posts about software metrics written by arie van deursen. But not every maintenance metric is of equal importance to every company. One approach, and a good starting point is the standard iso 9126 that recommend to measure the internal quality, the external quality and the quality in use of your product and based on the different metrics you can gather infer the different aspects of quality. In the latter case, some methodology like the delphi method boeh81 should be used to derive conclusions from a set of evaluations. Studying supply and demand of software maintenance and. Therefore, tracking maintenance metrics is a vital component of achieving world class maintenance in your organization. A metric of modifiability for software maintenance ieee conference. Chulani s bayesian analysis of software cost and quality models proceedings of the ieee international conference on software maintenance icsm01 dolado j 2000 a validation of the componentbased method for software size estimation, ieee transactions on software engineering, 26. In 1987 the us navy established a centralized software support activity ssa to provide software maintenance for cryptologic systems.

Metrics for software maintenance information technology essay. It modifies and update software applications after delivery to eliminate gaps. Optimizing the performance of people and assets is crucial to maintenance success. The enormous economic impact of quality of the software makes it a major concern for all software development efforts.

You should also use them even when everything is going well. Maintenance metrics translate action into numbers to give clarity on the performance of everyone and everything at your facility. Software maintenance activities can be classified as 1. Introduction many resources are spent on software maintenance. For calculating smi, following parameters are considered. A software metric is a standard of measure of a degree to which a software system or process possesses some property. No way to measure property directly or final product does not yet exist for predicting, need a model of relationship of predicted variable with other measurable variables. Measuring software maintainability quandary peak research. Since performance measurements for maintenance must include both results metrics and metrics for the process that produces the results, this document presents a representation for the business. When measuring these metrics, consider 3 things when it comes to improvement.

In this thesis we present a solution for both these problems. The use of complexity metrics throughout the software lifecycle. Sep 01, 2009 maintenance overtime as a percentage of maintenance time. Vowel i nasa johnson space center, houston, texas managers at the national aeronautics and space ad ministrations mission operations directorate at the johnson space center wanted to increase their in. In order to further understand and determine characteristics of objectoriented oo systems, this paper describes research that identifies attributes that are valuable in determining the difficulty in implementing changes during maintenance, as well as the possible. Ppc scheduled maintenance time total maintenance hours x 100. A software metric set for program maintenance management. Objective metrics can be computed by a single expert, but subjective metrics should be determined by a group of experts. However, the planning or scheduling role can and often does influence these metrics. Establishing metrics is essential for demonstrating the benefits of maintenance and reliability best practices. The ck metrics can be used to measure some characteristics of oo systems such as classes, message passing, inheritance, and encapsulation. Upkeep has now been deployed to over 1,000 businesses and is a leader in mobilefirst maintenance management software. We establish a schedule to attempt a smooth flow of resource use that includes people, aircraft, and consumables. Using metrics to influence planning and scheduling behaviors.

Pdf software maintenance is an expensive activity that consumes a major portion of the cost of the. Metrics that qualify as key performance indicators kpis are dependent on your industry, your companys goals, and the types of assets you manage. The book has been comprehensively rewritten and redesigned to take account of the fast changing developments in software metrics, most notably their. Introduction software maintenance typically accounts for at least 50. Realtime decisionmaking has become possible as new technology solutions, such as integrated workplace. A systematic mapping on productivity metrics in software. Metrics for software maintenance software quality metrics. Crm is the systematic building of organizationcustomer relationship with the use. This page describes what kpis are used for in computerised maintenance management systems and how cmms systems can be used to produce key performance indicators. The administrative repeat flag is set to y when the closed date is identical and there is a different cleared date for a circuit. Describes the characteristics of the product such as size, complexity, design features, performance, and quality level. Maintenance metrics that matter linkedin slideshare.

We can accurately measure some property of software or process. The standard also addresses maintenance activities prior to delivery of. Pdf software complexity and maintainability researchgate. Increased software complexity means that maintenance and. Think twice before using the maintainability index posted in research by arie van deursen this is a quick note about the maintainability index, a metric aimed at assessing software maintainability, as i recently run into developers and researchers who are still using it.

Lets begin with those metrics directly influenced by the maintenance planning and scheduling function. Benchmarking guide for software development and maintenance. How to effectively define and measure maintainability. Software engineering, software metrics, software productivity, mapping study. If you skip a level, you will not achieve the fullest result. How metrics can impact maintenance and reliability drew troyer in fact, my attitudes and philosophies about machinery lubrication, reliability engineering and business in general are really a compilation of the thoughts and works of others along with a little of my own creation weaved together into a framework.