Within the software architecture literature, the terms maintainability and modifiability. However, existing definitions of maintainability, such as the halstead volume, mccabes cyclomatic complexity. 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. Reliability, maintainability, and software quality have to be built into complex equipment and system during the design and development phase. Ibm rational logiscope rulechecker software subscription. This has to be supported by analytical investigations chapters 2, 4, and 6 as well as by design guidelines. Software metrics, halstead measure, maintainability, modifiability, software architecture, software deterioration. Qualitychecker in logiscope contains the definition of. Telelogics taulogiscope puts qa in developers hands. The literature shows several efforts to characterize and quantify software maintainability.
Logiscope transforms an iphone, ipad or ipod into a 100mhz, 16 channel logic analyzer. 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. Logiscope qualitychecker makes possible to evaluate the maintainability factor of a group of source files. Pdf software product measurement for supplier evaluation. Assessing software product maintainability based on class. Telelogics taulogiscope puts qa in developers hands adtmag. Download logiscope in the app store and test drive the interface for free. The maintainability index is calculated with certain formulae from linesofcode measures, mccabe measures and halstead complexity measures. In telecommunication and several other engineering fields, the term maintainability has the following meanings.
Adherence to such guidelines limits the influence of those aspects which can invalidate the models assumed for analytical. Measuring software maintainability is nontrivial and there exists no single metric to measure it accurately. Youscope is a free, opensource microscope control software compatible with most presentday automized microscopes. 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. Closely related concepts in the software engineering domain are evolvability, modifiability, technical debt, and code smells.
Besides a wide range of builtin configurable standard protocols, it is easily extendible to support specific custom. Toward software measurement and quality analysis of marf and. Software complexity analysis and software reliability estimation and prediction alice t. However iso 9126 standard doesnt specify the metrics to be used and the associated thresholds. Maintainability is a multifaceted quality attribute each of the facets must be analyzed to objectively measure it. Pdf lessons learnt from gauging software metrics of cabin. Ibm rational logiscope is a software quality assurance qa tool that automates static code analysis. Osqr video what is software maintainability, and why. However, assessing the maintainability of existing software and deriving. Yokogawa hewlettpackard, a joint venture of hewlettpackard and yokogawa elec.
Each criterion is associated with a group of metrics and threshold for those metrics minimum value and maximum value accepted. Software quality model for maintainability analysis. I define maintainable software as software for which it is easy to develop and deploy changes with minimal risk and impact to existing users. Lessons learnt from gauging software metrics of cabin software in. This document is a first step towards the construction of a maintainability prediction model. It was later acquired by ibm rational, and exists under the ibm software group. Introduction many resources are spent on software maintenance. Thus, producing software that is easy to maintain may potentially save large costs. A number of structural measures have been suggested to support the assessment and prediction of software quality attributes. The aim of our study is to investigate how classlevel measures of structural properties can be used to assess the maintainability of a software product as a whole. 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 rulechecker software subscription and support reinstatement 1 year overview and full product specs on cnet. Metrics for measuring the effectiveness of softwaretesting tools. Software product measurement for supplier evaluation. It identifies a set of software measures based on correlations published in empirical studies. Improve maintainability and reliability by locating errorprone modules and providing valuable information based on software metrics to help you anticipate and diagnose problems. 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. 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. Design guidelines for reliability, maintainability, and. Some people are more flexible than others, and some pieces of software are more maintainable than others. 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. 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. Maintainability is described by the 4 criteria we gave as examples above. How to effectively define and measure maintainability.
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. Ability of a computer program to be retained in its original form, and to be restored to that form in case of a failure. 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. Logiscope article about logiscope by the free dictionary. For this reason, many applications are replaced simply because the overhead to modify them becomes prohibitive. Appendix e identifies a number of specific dmsms managementrelated questions for use in support of las. Jyothi mudur senior software qa test developer engineer. Our website provides a free download of telelogic logiscope 6. Files are created on computers, sent over wireless networks to be printed out by printers, and backed up on file storage systems. Developing maintainable software helps reduce technical debt.
However, software metrics have evolved well beyond the simple measures introduced in the 1960s. Toward software measurement and quality analysis of marf and gipsy case studies a. Measuring and monitoring maintainability is a must for missioncritical applications where change is driven by tight timetomarket. Note satisfaction is influenced by the users perception of. Logiscope locates the errorprone modules that are responsible for most of the errors in your software.
Thus, as a first step towards optimizing maintainability of avionic software we. Can anyone recommend a good way of objectively measuring maintainability of a piece of code or an application why maintainability. Logiscope a tailored mobile delivery management system. Telelogic was founded in 1983 as a research and development arm of televerket, the swedish department of telecom now part of teliasonera. 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. Johnson space center houston, texas todd gunn, tuan pham, and ron ricaldi loral space information systems houston, texas national aeronautics and space administration.
Developing maintainable software software sustainability. Assessing software product maintainability based on classlevel structural measures. This definition suggests another reason why maintainability is important. Accurate and practical software maintainability prediction enables organizations to effectively manage their maintenance resources and guide maintenancerelated decision making. It provides an integrated environment for performing quantitative video microscopy for teaching laboratories. No matter whether you are a small courier, a major logistics service provider, or manufacturer logiscope can add significant value to your business. Define and verify coding rules using tcl or perl languages. Im tired of quality metrics in my group revolving only around number of bugs and code coverage.
Improve maintainability and reliability by locating errorprone. Driver delivery manifest proof of delivery and collection delivery and return management vehicle routing. Once these modules are found, logiscope provides you with valuable information based on software metrics and graphs to help you anticipate and diagnose problems. The qualitychecker module in rational logiscope offers a quality model quality reference. Kalimetrix 26 rue romain rolland 31502 ramonville saint agne france tel. Software that is written without maintainability in mind requires about four times as much effort to maintain than it did to develop. This free tool was originally created by telelogic. Assessing software product maintainability based on classlevel. Maintainability and flexibility at the software level are of predominant importance to drive innovation at the business process level. Automatic code analysis with logiscope products kalimetrix. Our built in antivirus checked this download and rated it as 100% safe.
The logiscope tool could extract 45 classes and 773 functions, but because. Software maintainability standard cisq consortium for. The most frequent installation filenames for the software are. Oscium logiscope, 100 mhz ipad logic analyzer, 16 channels. Senior software qa test developer engineerselfdriving car at nvidia. Our builtin antivirus checked this download and rated it as 100% safe. 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. 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. For this reason, there is a need to have a methodology to measure or. Telelogic ab was a software business headquartered in malmo, sweden. The history of software metrics began with counting the number of lines of code loc. Toward software measurement and quality analysis of. 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. Links to all the software youll need to start using your proscope digital microscopes and microscope cameras all in one place.
Telelogic had operations in 22 countries and had been. However, assessing the maintainability of existing software and deriving recommendations for increasing it is still an area of ongoing research. The importance of maintainable software basil vandegriend. Software quality is generally characterized by several factors which reveal the degree of success of the software developed and its future maintainability. 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. This definition implies that software maintainability depends on various. Telelogic ab, the swedishbased supplier of software development tools for the communications industry, has released its latest quality assessment environment, telelogic tau logiscope 5. Maintainability the capability of the software product to be modified. Define software metrics to track program quality characteristics and ensure quality objectives. In software engineering, these activities are known as software maintenance cf. 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. Osqr video what is software maintainability, and why does.
It was assumed that more lines of code implied more complex programs, which in turn were more likely to have errors. Every single business around the world takes advantage of modern technology to streamline and facilitate operations in their company. 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. Lessons learnt from gauging software metrics of cabin. Improve software engineering practices and helps developers achieve the. Once these modules are found, logiscope provides you with valuable information based on software metrics and graphs to. Modifications may include corrections, improvements or adaptation of the software to changes in environment, and in requirements and functional specifications. Techniques for product assessment product metrics there is a wide availability of metrics for software products in the literature. 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. 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. 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. Youscope allows to easily automatize complex microscopy protocols using an userfriendly graphical interface.
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