Configuration of Non-Functional Properties in Embedded Operating Systems

2011 ◽  
pp. 84-103
Author(s):  
Wanja Hofer ◽  
Julio Sincero ◽  
Wolfgang Schröder-Preikschat ◽  
Daniel Lohmann
Keyword(s):  
Operating System ◽  
Functional Properties ◽  
Operating Systems ◽  
Product Line ◽  
Target System ◽  
Special Importance ◽  
Product Lines ◽  
Memory Footprint ◽  
Embedded Operating Systems ◽  
Reliability Performance

In embedded operating systems (OSes), non-functional properties like reliability, performance, or memory footprint are of special importance. State-of-the-art OS product lines focus on the configurability of functional characteristics of the system. This chapter proposes an approach that aims at also making non-functional properties indirectly configurable and maintainable by the system configurator. In order to reach this goal, the CiAO OS product line used here has configurable architectural properties, which have no functional influence on the target system, but instead bear an impact on its non-functional properties. Additionally, the chapter develops a feedback approach that gains information about the non-functional properties of an already configured system to assist further configuration decisions, and presents and details the CiAO approach and evaluates it using two case studies from the CiAO operating system.

scholarly journals Semi-automated process of adaptation of platform dependent parts of embedded operating systems

2017 ◽  
Vol 68 (2) ◽  
pp. 87-98
Author(s):  
Martin Vojtko ◽  
Tibor Krajčovič
Keyword(s):  
Operating System ◽  
Operating Systems ◽  
Automatic Generation ◽  
Adaptation Process ◽  
Formal Description ◽  
Minimal Requirement ◽  
Complicated Process ◽  
Automated Process ◽  
Embedded Operating Systems ◽  
The Impact

Abstract Each year manufacturers develop new processors. As a reaction to this continuous development, the developers of software have to adapt their software to those new processors. As a minimal requirement, the code of an operating system has to be changed to enable the execution of other user applications. This change is a complicated process during which incompatible parts of an operating system have to be redesigned and missing parts have to be implemented. Complications arise when there is a need to adapt an operating system to completely different processor architecture. In this paper we present a novel adaptation process that has preconditions to reduce the impact of these complications. This process uses a file for the formal description of a processor, which is also described in this paper. The formal description could act as a standard for processor manufacturers and could allow the generation of a platform dependent code of an operating system. This paper presents concepts, definitions and ideas of the adaptation process and shows possible solutions for an automatic generation of code parts of an operating system.

Addressing Non-Functional Properties in Feature Models: A Goal-Oriented Approach

2014 ◽  
Vol 24 (10) ◽  
pp. 1439-1487 ◽  
Author(s):  
Mehdi Noorian ◽  
Mohsen Asadi ◽  
Ebrahim Bagheri ◽  
Weichang Du
Keyword(s):  
Functional Properties ◽  
Product Line ◽  
Feature Model ◽  
Software Systems ◽  
Feature Models ◽  
Target Domain ◽  
Product Lines ◽  
Software Products ◽  
Software Product ◽  
Goal Models

Software Product Line (SPL) engineering is a systematic reuse-based software development approach which is founded on the idea of building software products using a set of core assets rather than developing individual software systems from scratch. Feature models are among the widely used artefacts for SPL development that mostly capture functional and operational variability of a system. Researchers have argued that connecting intentional variability models such as goal models with feature variability models in a target domain can enrich feature models with valuable quality and non-functional information. Interrelating goal models and feature models has already been proposed in the literature for capturing non-functional properties in software product lines; however, this manual integration process is cumbersome and tedious. In this paper, we propose a (semi) automated approach that systematically integrates feature models and goal models through standard ontologies. Our proposed approach connects feature model and goal model elements through measuring the semantic similarity of their annotated ontological concepts. Our work not only provides the means to systematically interrelate feature models and goal models but also allows domain engineers to identify and model the role and significance of non-functional properties in the domain represented by the feature model.

scholarly journals Embedded Operating System for MicroBlaze

10.14311/856 ◽  
2006 ◽  
Vol 46 (4) ◽  
Author(s):  
M. Šimek
Keyword(s):  
Operating System ◽  
Embedded Systems ◽  
Operating Systems ◽  
Development Time ◽  
Embedded Operating System ◽  
Processor Core ◽  
Ongoing Effort ◽  
Embedded Operating Systems ◽  
Further Development ◽  
Current Experience

This paper presents a work in progress on experiments with embedded operating systems for the MicroBlaze processor. Modern embedded systems based on a configurable platform incorporating a similar processor core are gaining importance with the ongoing effort to minimize cost and development time. After an overview of the configurable platform based on this processor core, we devote our attention to uClinux OS. This OS has been successfully ported for the MicroBlaze processor, and we present our current experience with it. At the end of the paper we discuss several possible booting strategies and recommend further development of U-BOOT. 

scholarly journals An Adaptive Scheduler for Real-Time Operating Systems to Extend WSN Nodes Lifetime

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Roberto Rodriguez-Zurrunero ◽  
Ramiro Utrilla ◽  
Elena Romero ◽  
Alvaro Araujo
Keyword(s):  
Operating System ◽  
Real Time ◽  
Operating Systems ◽  
Research Area ◽  
Rechargeable Batteries ◽  
Wireless Sensor ◽  
Portable Devices ◽  
Wireless Devices ◽  
Changing Environments ◽  
Tasks Scheduling

Wireless Sensor Networks (WSNs) are a growing research area as a large of number portable devices are being developed. This fact makes operating systems (OS) useful to homogenize the development of these devices, to reduce design times, and to provide tools for developing complex applications. This work presents an operating system scheduler for resource-constraint wireless devices, which adapts the tasks scheduling in changing environments. The proposed adaptive scheduler allows dynamically delaying the execution of low priority tasks while maintaining real-time capabilities on high priority ones. Therefore, the scheduler is useful in nodes with rechargeable batteries, as it reduces its energy consumption when battery level is low, by delaying the least critical tasks. The adaptive scheduler has been implemented and tested in real nodes, and the results show that the nodes lifetime could be increased up to 70% in some scenarios at the expense of increasing latency of low priority tasks.

KylinX

2021 ◽  
Vol 37 (1--4) ◽  
pp. 1-27
Author(s):  
Yiming Zhang ◽  
Chengfei Zhang ◽  
Yaozheng Wang ◽  
Kai Yu ◽  
Guangtao Xue ◽  
...  
Keyword(s):  
Operating System ◽  
Virtual Machine ◽  
Web Server ◽  
Experimental Results ◽  
Similar Performance ◽  
Dynamic Mapping ◽  
Memory Footprint ◽  
Dynamic Library ◽  
High Flexibility

Unikernel specializes a minimalistic LibOS and a target application into a standalone single-purpose virtual machine (VM) running on a hypervisor, which is referred to as (virtual) appliance . Compared to traditional VMs, Unikernel appliances have smaller memory footprint and lower overhead while guaranteeing the same level of isolation. On the downside, Unikernel strips off the process abstraction from its monolithic appliance and thus sacrifices flexibility, efficiency, and applicability. In this article, we examine whether there is a balance embracing the best of both Unikernel appliances (strong isolation) and processes (high flexibility/efficiency). We present KylinX, a dynamic library operating system for simplified and efficient cloud virtualization by providing the pVM (process-like VM) abstraction. A pVM takes the hypervisor as an OS and the Unikernel appliance as a process allowing both page-level and library-level dynamic mapping. At the page level, KylinX supports pVM fork plus a set of API for inter-pVM communication (IpC, which is compatible with conventional UNIX IPC). At the library level, KylinX supports shared libraries to be linked to a Unikernel appliance at runtime. KylinX enforces mapping restrictions against potential threats. We implement a prototype of KylinX by modifying MiniOS and Xen tools. Extensive experimental results show that KylinX achieves similar performance both in micro benchmarks (fork, IpC, library update, etc.) and in applications (Redis, web server, and DNS server) compared to conventional processes, while retaining the strong isolation benefit of VMs/Unikernels.

INSTALASI SISTEM OPERASI BERBASIS WINDOWS 10 PADA SEKOLAH MAN KISARAN

2020 ◽  
Vol 3 (2) ◽  
pp. 163-168
Author(s):  
Ruri Ashari Dalimunthe ◽  
Riki Andri Yusda ◽  
William Ramdhan
Keyword(s):  
Operating System ◽  
Community Service ◽  
Operating Systems ◽  
Direct Observation ◽  
Computer Lab ◽  
Service Activities ◽  
Computer Labs ◽  
At Home

Abstract: Community service activities entitled "Installation of Operating Systems Based on Windows 10" aims to provide information to students from MAN Asahan about Installing Windows Operating Systems. The method used in this activity is a direct observation of the MAN Asahan school by watching and analyzing the problems or troubleshooting that occurs at the Computer Lab at MAN Asahan. In addition, information on problems in the computer Labs of the school was also carried out by a team of lecturers as the perpetrators of this community service by way of direct interviews with the Teachers and employees who served in the Computer Lab of the MAN Asahan school. The end result of this dedication is how students can repair computers, as well as troubleshooting that occurs on school computers and computers at home, can be overcome alone without having to use computer repair services.Keywords: installation; operating system; Windows 10 Abstrak: Kegiatan pengabdian kepada masyarakat yang diberi judul “Instalasi Sistem Operasi Berbasis Windows 10” bertujuan untuk memberikan informasi kepada siswa dan siswi MAN Asahan tentang Instalasi Sistem Operasi Windows. Metode yang digunakan dalam kegiatan ini adalah observasi langsung ke sekolah MAN Asahan dengan melihat serta menganalisa permasalahan ataupun troubleshooting yang terjadi pada Laboratorium Komputer disekolah MAN Asahan. Selain itu, Informasi permasalahan pada komputer Lab sekolah juga dilakukan tim dosen selaku pelaku kegiatan pengabdian ini dengan cara wawancara langsung kepada Guru dan pegawai yang bertugas di Lab Komputer sekolah MAN Asahan. Hasil akhir dari pengabdian ini adalah bagaimana siswa dan siswi dapat memperbaiki komputer serta troubleshooting yang terjadi pada komputer sekolah maupun komputer dirumah dapat teratasi sendiri tanpa harus memakai jasa perbaikan komputer. Kata kunci: instalasi; sistem operasi;  windows 10

DEVS OS (Discrete Even Visualization and Simulation Operating System)

2018 ◽  
Author(s):  
Adnan Hajar
Keyword(s):  
Operating System ◽  
Operating Systems ◽  
Scheduling Algorithm ◽  
The Novel ◽  
Priority Scheduling ◽  
First Come First Serve ◽  
Multiple Cycles ◽  
Visualization And Simulation ◽  
Traditional Approaches

The use of traditional approaches to teach Operating Systems usually lacks the visual aspect. The following research investigates the novel use of DEVS (Discrete Even Visualization and Simulation) in simulating the operation of an operating system. Cd boost++ was the framework of choice for this project. The simulation successfully mimicked the work of an operating system by simulating multiple cycles of program requests. This simulation is capable of further enhance the explanation of how an operating system works. The cases studied in this work include: 1- two processes running concurrently doing multiple IO’s, 2-four processes running concurrently based on a first come first serve scheduling algorithm, and 3- 20 processes running concurrently using highest priority scheduling algorithm. Output observation of the last case show promising results of successful use of DEVS and cd boost++ as a framework to build an operating system.

scholarly journals Fragment-oriented programming: a framework to design and implement software product line domain components

DYNA ◽  
2018 ◽  
Vol 85 (207) ◽  
pp. 74-83 ◽  
Author(s):  
Daniel Correa ◽  
Raúl Mazo ◽  
Gloria Lucia Giraldo Goméz
Keyword(s):  
Software Product Line ◽  
Preliminary Evidence ◽  
Product Line ◽  
Software Systems ◽  
Software Components ◽  
Product Lines ◽  
Reusable Software ◽  
Software Products ◽  
Manual Intervention ◽  
Software Product

Software product lines facilitate the industrialization of software development. The main goal is to create a set of reusable software components for the rapid production of a software systems family. Many authors have proposed different approaches to design and implement the components of a product line. However, the construction and integration of these components continue to be a complex and time-consuming process. This paper introduces Fragment-oriented programming (FragOP), a framework to design and implement software product line domain components, and derive software products. FragOP is based on: (i) domain components, (ii) fragmentations points and (iii)fragments. FragOP was implemented in the VariaMos tool and using it we created a clothing stores software product line. We derivedfive different products, integrating automatically thousands of lines of code. On average, only three lines of code were manually modified;which provided preliminary evidence that using FragOP reduces manual intervention when integrating domain components.

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