In telecommunication and several other engineering fields, the term maintainability has the following meanings. However, existing definitions of maintainability, such as the halstead volume, mccabes cyclomatic complexity or the sei maintainability index provide a very poor understanding of what maintainability is how it. Senior software qa test developer engineerselfdriving car at nvidia. Lessons learnt from gauging software metrics of cabin software in. Logiscope a tailored mobile delivery management system. Software quality is generally characterized by several factors which reveal the degree of success of the software developed and its future maintainability. Within the software architecture literature, the terms maintainability and modifiability. Lessons learnt from gauging software metrics of cabin. Henry, objectoriented metrics that predict maintainability, journal of systems and software, vol. Youscope allows to easily automatize complex microscopy protocols using an userfriendly graphical interface. The maintainability index is calculated with certain formulae from linesofcode measures, mccabe measures and halstead complexity measures. However, existing definitions of maintainability, such as the halstead volume, mccabes cyclomatic complexity.
Software metrics, halstead measure, maintainability, modifiability, software architecture, software deterioration. Pdf software product measurement for supplier evaluation. Kalimetrix 26 rue romain rolland 31502 ramonville saint agne france tel. It identifies a set of software measures based on correlations published in empirical studies. Measuring and monitoring maintainability is a must for missioncritical applications where change is driven by tight timetomarket. With applications for all of the main operating software platforms, an array of device compatibility personal or rugged and flexibility where integration with back office solutions is concerned logiscope is truly versatile. Logiscope transforms an iphone, ipad or ipod into a 100mhz, 16 channel logic analyzer. Camscope is a multithreaded program for acquiring and quantitatively analyzing images from an iidccompliant firewire camera. Osqr video what is software maintainability, and why does. Software maintainability is defined in the ieee standard glossary of software engineering terminology as the ease with which a software system or component can be modified to correct faults, improve performance or other attributes, or adapt to a changed environment. Design guidelines for reliability, maintainability, and. Measuring software maintainability is nontrivial and there exists no single metric to measure it accurately.
Ability of a computer program to be retained in its original form, and to be restored to that form in case of a failure. Reliability, maintainability, and software quality have to be built into complex equipment and system during the design and development phase. Taulogiscope is designed to automate activities associated with software quality assurance, check software under development against corporateindustry rules and standards, analyze the software code for errorprone sections, provide measurements of test coverage, and improve the quality and maintainability of legacy software. Note satisfaction is influenced by the users perception of. Not only is it the most intuitive logic analyzer available, the triggering is so powerful youll be able to count the hair on your bug. Qualitychecker in logiscope contains the definition of. Adherence to such guidelines limits the influence of those aspects which can invalidate the models assumed for analytical. Every single business around the world takes advantage of modern technology to streamline and facilitate operations in their company. Tau logiscope is designed to automate activities associated with software quality assurance, check software under development against corporateindustry rules and standards, analyze the software code for errorprone sections, provide measurements of test coverage, and improve the quality and maintainability of legacy software. Zhou determines maintainability measures as i a managerial assessment to quantify the cost of maintaining existing software systems, ii as a quality assessment and control mechanism to drive software development efforts, and as iii a mechanism to enforce maintainability standards prior to acceptance andor delivery 26. Im tired of quality metrics in my group revolving only around number of bugs and code coverage. Links to all the software youll need to start using your proscope digital microscopes and microscope cameras all in one place.
Johnson space center houston, texas todd gunn, tuan pham, and ron ricaldi loral space information systems houston, texas national aeronautics and space administration. Logiscope article about logiscope by the free dictionary. Satisfaction is influenced by the users perception of properties of the software product such as those measured by external metrics and by the users perception of the efficiency, productivity and safety in use. Accurate and practical software maintainability prediction enables organizations to effectively manage their maintenance resources and guide maintenancerelated decision making. Software product measurement for supplier evaluation. Our website provides a free download of telelogic logiscope 6. Download logiscope in the app store and test drive the interface for free. It provides an integrated environment for performing quantitative video microscopy for teaching laboratories.
Yokogawa hewlettpackard, a joint venture of hewlettpackard and yokogawa elec. Automatic code analysis with logiscope products kalimetrix. Ibm rational logiscope rulechecker software subscription and support reinstatement 1 year overview and full product specs on cnet. The history of software metrics began with counting the number of lines of code loc.
Software that is written without maintainability in mind requires about four times as much effort to maintain than it did to develop. Assessing software product maintainability based on class. A number of structural measures have been suggested to support the assessment and prediction of software quality attributes. The most frequent installation filenames for the software are.
Thus, as a first step towards optimizing maintainability of avionic software we. Logiscope is an allencompassing realtime mobile proof of delivery pod and logistics management application, designed to facilitate all aspects of the logistics process and provide all necessary information at the right time in the right context from a single mobile application. Each criterion is associated with a group of metrics and threshold for those metrics minimum value and maximum value accepted. This definition suggests another reason why maintainability is important. Assessing software product maintainability based on classlevel. Our built in antivirus checked this download and rated it as 100% safe. Our builtin antivirus checked this download and rated it as 100% safe. Appendix e identifies a number of specific dmsms managementrelated questions for use in support of las. Maintainability is a measure of how hard or easy it is to change a piece of software, just like flexibility is a measure of how hard or easy it is for someone to adapt to new circumstances. Ibm rational logiscope is a software quality assurance qa tool that automates static code analysis. However iso 9126 standard doesnt specify the metrics to be used and the associated thresholds.
Developing maintainable software software sustainability. This definition implies that software maintainability depends on various. However, assessing the maintainability of existing software and deriving. The importance of maintainable software basil vandegriend.
Jyothi mudur senior software qa test developer engineer. Ibm rational logiscope rulechecker software subscription. Besides a wide range of builtin configurable standard protocols, it is easily extendible to support specific custom. Toward software measurement and quality analysis of. Osqr video what is software maintainability, and why. This paper presents smplearner, an automated learningbased approach to train maintainability predictors by harvesting the actual average maintenance effort computed from the code change history as well as. Iso 91261 standard defines the software quality model and the definition of reliability, maintainability, analyzability and changeability which are used in the quality checker audit report of logiscope. Software quality model for maintainability analysis.
Driver delivery manifest proof of delivery and collection delivery and return management vehicle routing. Closely related concepts in the software engineering domain are evolvability, modifiability, technical debt, and code smells. Toward software measurement and quality analysis of marf and gipsy case studies a. It was assumed that more lines of code implied more complex programs, which in turn were more likely to have errors. Thus, producing software that is easy to maintain may potentially save large costs. Software complexity analysis and software reliability estimation and prediction alice t. Define and verify coding rules using tcl or perl languages. Telelogics taulogiscope puts qa in developers hands. In some cases, maintainability involves a system of continuous improvement learning from the past in order to improve the ability to maintain systems, or improve reliability of systems based on maintenance experience. Some people are more flexible than others, and some pieces of software are more maintainable than others.
Assessing software product maintainability based on classlevel structural measures. Telelogic had operations in 22 countries and had been. Metrics for measuring the effectiveness of softwaretesting tools. In software engineering, these activities are known as software maintenance cf. Telelogic was founded in 1983 as a research and development arm of televerket, the swedish department of telecom now part of teliasonera. Logiscope qualitychecker makes possible to evaluate the maintainability factor of a group of source files. The logiscope tool could extract 45 classes and 773 functions, but because. It was later acquired by ibm rational, and exists under the ibm software group.
However, software metrics have evolved well beyond the simple measures introduced in the 1960s. Maintainability is a multifaceted quality attribute each of the facets must be analyzed to objectively measure it. Toward software measurement and quality analysis of marf and. Logiscope locates the errorprone modules that are responsible for most of the errors in your software.
Files are created on computers, sent over wireless networks to be printed out by printers, and backed up on file storage systems. The automated source code maintainability measure is an industrysupported standard that outlines a set of 29 critical coding and architecture weaknesses to avoid in source code because of their impact on the maintainability of a software application. The ministry of international trade and industry has launched the sigma project, which calls for computerizing the software process and industrializing and computerizing software production. It was later acquired by ibm rational, and exists under the ibm software group telelogic had operations in 22 countries and had been publicly traded since 1999. Oscium logiscope, 100 mhz ipad logic analyzer, 16 channels. Youscope is a free, opensource microscope control software compatible with most presentday automized microscopes. Improve maintainability and reliability by locating errorprone. Pdf lessons learnt from gauging software metrics of cabin. I define maintainable software as software for which it is easy to develop and deploy changes with minimal risk and impact to existing users. Introduction many resources are spent on software maintenance. Techniques for product assessment product metrics there is a wide availability of metrics for software products in the literature. Developing maintainable software helps reduce technical debt. Telelogic ab, the swedishbased supplier of software development tools for the communications industry, has released its latest quality assessment environment, telelogic tau logiscope 5. Improve maintainability and reliability by locating errorprone modules and providing valuable information based on software metrics to help you anticipate and diagnose problems.
Improve maintainability and reliability by locating errorprone modules and providing valuable information based on software metrics to help you anticipate and diagnose problems logiscope rule checker helps you. However, assessing the maintainability of existing software and deriving recommendations for increasing it is still an area of ongoing research. Telelogics taulogiscope puts qa in developers hands adtmag. For this reason, many applications are replaced simply because the overhead to modify them becomes prohibitive. Once these modules are found, logiscope provides you with valuable information based on software metrics and graphs to. Once these modules are found, logiscope provides you with valuable information based on software metrics and graphs to help you anticipate and diagnose problems. Software maintainability standard cisq consortium for. This has to be supported by analytical investigations chapters 2, 4, and 6 as well as by design guidelines. Maintainability is described by the 4 criteria we gave as examples above. Can anyone recommend a good way of objectively measuring maintainability of a piece of code or an application why maintainability. How to effectively define and measure maintainability. Maintainability and flexibility at the software level are of predominant importance to drive innovation at the business process level. Define software metrics to track program quality characteristics and ensure quality objectives. This document is a first step towards the construction of a maintainability prediction model.
No matter whether you are a small courier, a major logistics service provider, or manufacturer logiscope can add significant value to your business. Modifications may include corrections, improvements or adaptation of the software to changes in environment, and in requirements and functional specifications. The mapping of draft standards work in the area of product quality measurement to industry practice has lead to a discussion on the importance of the previous knowledge of the design and support. Telelogic ab was a software business headquartered in malmo, sweden. The qualitychecker module in rational logiscope offers a quality model quality reference. Improve software engineering practices and helps developers achieve the. The literature shows several efforts to characterize and quantify software maintainability. Maintainability the capability of the software product to be modified. For this reason, there is a need to have a methodology to measure or. Sep 03, 2019 anticipate and diagnose problems by providing information based on software metrics and graphs define software metrics to track logiscope quality characteristics and ensure logiscope objectives improve maintainability and reliability by locating errorprone modules and providing valuable information based on software metrics to help you. The most widely accepted propose the use of a polynomial regression model where regression analysis is used as a tool to explore the relationship between software maintainability and software metrics 25, 26.
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