Performance Test Execution Phase

2006 ◽  
pp. 148-166
Author(s):  
B. M. Subraya
Keyword(s):  
Operating System ◽  
Performance Test ◽  
Personnel Scheduling ◽  
Test Environment ◽  
Multiple Test ◽  
Test Execution ◽  
Execution Phase ◽  
Successful Execution ◽  
The Cost ◽  
Typical Test

The focus of this chapter is toward the factors needing attention while conducting the tests of performance. Chapters 5 and 6 discuss in detail the test plan as well as the test scripts required for conducting the performance tests. The successful execution of PT calls for coordination of a complex set of activities such as management of personnel, scheduling the tests at an appropriate time, configuring tools for various performance parameters, verification of application readiness for the test, and, above all, management of multiple test runs versus cost of resources. Conducting the tests may spread over a number of days, and it may also warrant customization of the operating system. The team responsible for carrying out the tests must be well aware of these factors. Typical test execution (see Test execution, 2004) phases are shown in Figure 7.1. Each phase must be planned carefully. If these phases are followed in sequence, the probability of test execution errors could be reduced. The main reason behind introducing these phases is to reduce the cost. To illustrate, if we directly run tests without passing through initial phases like elaboration test (say) and an error creeps in later, it will result in unnecessary investment of effort on test runs, which is very expensive. Specialized skills are required to run tests. Sometimes, the test environment (including tools) has to be taken on hire during the test runs. All these involve effort and time, which will go to waste if the tests are not executed properly. Each phase is explained in Figure 7.1.

PERBAIKAN TATA LETAK LANTAI PRODUKSI INDUSTRI MEBEL MENGGUNAKAN METODE GRAFIK DAN ALGORITMA CRAFT

2020 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Kuswanto Kuswanto ◽  
Juan Junius ◽  
Anita Christine Sembiring
Keyword(s):  
Operating System ◽  
Material Handling ◽  
Facility Layout ◽  
Integrated Planning ◽  
Furniture Manufacturing ◽  
Milling Machines ◽  
Material Handling Costs ◽  
The Cost ◽  
A Company ◽  
Research Show

Facility layout is integrated planning of the flow of a product in an operating system to obtain the most effective and efficient interrelation between workers, materials, machinery, and equipment as well as handling and transferring materials. A company engaged in furniture manufacturing has a problem in its production process, namely, the distance between machines is too far so that it affects the cost of handling materials. Distant workstations are found on profile machines, milling machines, measuring machines, cutting machines. Therefore, improvements must be made to the layout of facilities on the production floor so that facility layout is efficient and material handling costs are reduced. The problem-solving approach used is the Graph Method and CRAFT Algorithm. The results of the research show that material handling costs are reduced by 7.58% or Rp. 17,765 using the CRAFT algorithm.

scholarly journals OPTIMALISASI SUMBER DAYA KOMPUTER DENGAN VIRTUALISASI SERVER MENGGUNAKAN PROXMOX VE

2019 ◽  
Vol 9 (2) ◽  
pp. 369-376
Author(s):  
Soni Soni ◽  
Abdurrahman Abdurrahman ◽  
Afdhil Hafid
Keyword(s):  
Operating System ◽  
Memory Usage ◽  
Server Virtualization ◽  
Virtualization Technology ◽  
The Cost ◽  
Server Computer

Virtualization technology is a topic that began to be scrutinized by researchers. This is inseparable from the technology's ability to reduce the cost of providing infrastructure and operations independently for each service to be served. With server virtualization, we can make several computers into one, which used to be possible for server computers to have three physical computers that can be used as one for the three server computers which in fact the resources on a single physical server computer will not use all the resources in one single physical computer. The existence of proxmox, then all servers can be connected in a network together so that they are able to streamline time. In addition, Proxmox has a web console that can be used for various purposes in server virtualization and maintenance. In this study, the performance of server virtualization using ProxmoxVE will be examined. This study is intended to determine the load of memory usage, load the CPU when running all the servers in Proxmox, and examine the Throughput, PacketLoss, Delay and Jitter on the server. Keyword: Proxmox, Virtualization, Resources, Server, Operating System

Virtual Test Environment for Self-Optimizing Systems

2013 ◽  
Author(s):  
Jörg Stöcklein ◽  
Daniel Baldin ◽  
Wolfgang Müller ◽  
Tao Xie
Keyword(s):  
Operating System ◽  
Real Time ◽  
Virtual Prototype ◽  
Test Cases ◽  
Test Environment ◽  
Dead Code ◽  
Real Time Operating System ◽  
The Real ◽  
Code Coverage ◽  
Virtual Test

In our paper we present a virtual test environment for self-optimizing systems based on mutant based testing to validate user tasks of a real-time operating system. This allows the efficient validation of the code coverage of the test cases and therefore helps to detect errors in order to improving the reliability of the system software. Technically we are able to run and test the software on both systems. By writing application software and setting up the virtual test environment properly, we define our test cases. To validate the code coverage for our test cases, we use the approach of mutant based testing. By running this mutated code on our virtual prototype in the virtual test environment, we are able to efficiently validate the code coverage and are able to detect bugs in the application code or detect dead code that is not executed. Finding non-executing code leads to redefinition of our test cases by either changing the test environment or the application code in the case of dead code. We implemented the virtual test environment on top of the third party low cost VR system Unity 3D, which is frequently used in entertainment and education. We demonstrate our concepts by the example of our BeBot robot vehicles. The implementation is based on our self-optimizing real-time operating system ORCOS and we used the tool CERTITUDE(TM) for generating the mutations in our application code. Our BeBot virtual prototype in our virtual test environment implements the same low-level interface to the underlying hardware as the real BeBot. This allows a redirection of commands in ORCOS to either the real or the virtual BeBot in order to provide a VR based platform for early software development as well as ensures comparable conditions under both environments. Our example applies a virtual BeBot that drives through a labyrinth utilizing its IR sensors for navigation. The mutant based testing checks if all situations implemented by the software to navigate through the labyrinth are covered by our tests.

Progress in sensor technology - progress in process control? Part I: Sensor property investigation and classification

2003 ◽  
Vol 47 (2) ◽  
pp. 103-112 ◽  
Author(s):  
L. Rieger ◽  
J. Alex ◽  
S. Winkler ◽  
M. Boehler ◽  
M. Thomann ◽  
...  
Keyword(s):  
Control Strategies ◽  
Sensor Technology ◽  
Limiting Factor ◽  
Test Environment ◽  
Sensor Property ◽  
Sensor Models ◽  
The Cost ◽  
And Control ◽  
Measurement And Control

To ensure correctly operating control systems, the measurement and control equipment in WWTPs must be mutually consistent. The dynamic simulation of activated sludge systems could offer a suitable tool for designing and optimising control strategies. Ideal or simplified sensor models represent a limiting factor for comparability with field applications. More realistic sensor models are therefore required. Two groups of sensor models are proposed on the basis of field and laboratory tests: one for specific sensors and another for a classification of sensor types to be used with the COST simulation benchmark environment. This should lead to a more realistic test environment and allow control engineers to define the requirements of the measuring equipment as a function of the selected control strategy.

A modified block replacement policy with two variables and general random minimal repair cost

1996 ◽  
Vol 33 (2) ◽  
pp. 557-572 ◽  
Author(s):  
Shey-Huei Sheu
Keyword(s):  
Operating System ◽  
Replacement Policy ◽  
Repair Cost ◽  
Minimal Repair ◽  
Expected Cost ◽  
Cost Rate ◽  
Age Dependent ◽  
Modified Block ◽  
The Cost ◽  
Random Part

This paper considers a modified block replacement with two variables and general random minimal repair cost. Under such a policy, an operating system is preventively replaced by new ones at times kT (k= 1, 2, ···) independently of its failure history. If the system fails in [(k − 1)T, (k − 1)T+ T0) it is either replaced by a new one or minimally repaired, and if in [(k − 1) T + T0, kT) it is either minimally repaired or remains inactive until the next planned replacement. The choice of these two possible actions is based on some random mechanism which is age-dependent. The cost of the ith minimal repair of the system at age y depends on the random part C(y) and the deterministic part ci (y). The expected cost rate is obtained, using the results of renewal reward theory. The model with two variables is transformed into a model with one variable and the optimum policy is discussed.

Perceptions and barriers towards clinical trials participation in Asian cancer patients.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. e19523-e19523
Author(s):  
I Peng Thomas Soh ◽  
Cheong Kiat Julian Tay ◽  
Gui Yi Ho ◽  
Angela Pang ◽  
Pei Jye Voon ◽  
...  
Keyword(s):  
Clinical Trials ◽  
Cancer Patients ◽  
Willingness To Participate ◽  
Asian Patients ◽  
Perceptions And Attitudes ◽  
Information Awareness ◽  
National University ◽  
Successful Execution ◽  
Refusal To Participate ◽  
The Cost

e19523 Background: There is currently limited data on the perceptions and attitudes of Asian cancer patients towards therapeutic clinical trials (CTs). Understanding this is crucial to their successful execution. Methods: From May to December 2011, we surveyed cancer outpatients at the National University Cancer Institute, Singapore, and collected data on patient demographics, tumor information, awareness, perceptions, and willingness to participate in CTs. Results: 240 patients were surveyed, including 85 (35%) who had previously participated, 141 (59%) who had never participated, and 14 (6%) who had refused participation in a CT. The majority was Chinese (78.8%) or Malay (16.7%), 57.5% was female and median age was 56 years (range 22-83). There were no differences in demographics between patients who had, had not or refused participation in a CT. 135 patients (56%) had prior awareness of CTs, and were more likely to be female (p=0.027) or had metastatic disease (p=0.002). 111 (46%) patients were willing to participate in CTs given the opportunity, and were more likely to have prior awareness of CTs (76.6% vs 38.8%, p<0.001), to believe that CT sponsorship covers only the cost of trial drugs (52.3% vs 24%, p<0.001), and to state that paying for non-trial related or standard expenses was reasonable (35.1% vs 19.4%, p=0.006), compared to patients who were not willing to participate. Patient age, gender, education, income, or availability of health insurance did not influence willingness to participate. The majority of patients who had participated in CTs (66/85, 78%) reported only positive experiences, while 13 (15%) reported mixed experiences, and only 2 (2.4%) reported only negative experiences. The feeling of being treated as ‘guinea pigs’ (n=7), and fear of toxicities (n=5) were the main reasons cited for refusal to participate in CTs. Conclusions: Asian patients have moderate awareness of CTs, and slightly less than half the patients surveyed were willing to participate in CTs. Prior knowledge of CTs was associated with increased willingness to participate, and improving awareness through education could facilitate enrollment.

ROS Based Voice-Control Navigation of Intelligent Wheelchair

2015 ◽  
Vol 733 ◽  
pp. 740-744 ◽  
Author(s):  
Yi Zhang ◽  
Shi Chuan Xu
Keyword(s):  
Operating System ◽  
Control System ◽  
System Development ◽  
Powered Wheelchair ◽  
Robot Operating System ◽  
Intelligent Wheelchair ◽  
Software Packages ◽  
Voice Control ◽  
The Cost ◽  
The Voice

Compared with the traditional electric-powered wheelchair, people are paying more attention on intelligent wheelchair. While the traditional intelligent wheelchair relays on separate designed control system, it is not good for general use. In that case, ROS provides an easy to use framework for rapid system development so that the researchers can develop various software packages to meet their needs, and we can also call each other packages without considering the compatibility problems. In this paper, we present a ROS (Robot Operating System) based intelligent wheelchair with the function of voice-control navigation. Compared with the traditional navigation, the voice-control navigation is more human. Obviously, ROS increases the versatility of system and reduces the cost. In order to prove the advancement and feasibility of this developed system, some experimental results are given in the paper.

scholarly journals Costs and Procurement for Cross-Laminated Timber in Mid-Rise Buildings

2019 ◽  
Vol 25 (2) ◽  
pp. 43-52
Author(s):  
Anne Gunnarshaug Lien
Keyword(s):  
Cost Reduction ◽  
Ghg Emissions ◽  
Decision Making Process ◽  
Zero Energy ◽  
Cross Laminated Timber ◽  
Zero Energy Building ◽  
Execution Phase ◽  
Final Design ◽  
Environmental Goal ◽  
The Cost

The objective of this paper is to report and analyse strategies for cost reduction, design processes, and procurement models of one wooden nearly Zero Energy Building (nZEB) in Norway. The building investigated in this paper is the Moholt Allmenning, a newly-built student accommodation located in Moholt, Trondheim. Interviews with the building's owner and the contractor were carried out to obtain information on the decision-making process during the procurement phase, the planning phase, and the execution phase. The results show that the environmental goal and the criteria set for the use of wood in the tender announcement were a critical driving force for choosing cross laminated timber (CLT) in the final design. The results also show that the cost of using CLT in student residences is competitive against using concrete and steel. Given the requirement of little greenhouse gas (GHG) emissions from materials production in nZEBs, the use of CLT is however a better choice. The objective of this paper is to report and analyse strategies for cost reduction, design processes, and procurement models of one wooden nearly Zero Energy Building (nZEB) in Norway. This publication is part of the dissemination activities of the EU Horizon 2020 project NERO, whose scope is to demonstrate the feasibility of cost reduction of nZEBs built with wood in the Nordic Countries. Case buildings from Estonia, Finland, Norway, and Sweden are studied with respect to their technological solutions, energy use, and construction cost. The Norwegian building investigated in this paper is the Moholt Allmenning, a newly-built student accommodation located in Moholt, Trondheim. Interviews with the building's owner and the contractor were carried out to obtain information on the decision-making process during the procurement phase, the planning phase, and the execution phase. The results show that the environmental goal and the criteria set for the use of wood in the tender announcement were a critical driving force for choosing cross laminated timber (CLT) in the final design. The results also show that the cost of using CLT in student residences is competitive against using concrete and steel. Given the requirement of little greenhouse gas (GHG) emissions from materials production in nZEBs, the use of CLT is however a better choice.

A remote operating system of an unmanned military robot for indoor test environment

IEEE ISR 2013 ◽  
2013 ◽  
Author(s):  
Sung-Soo Kim ◽  
Sunwoo Kim ◽  
Heechan Kang ◽  
Myeongcheol Oh
Keyword(s):  
Operating System ◽  
Test Environment

A Replica Based Co-Scheduler (RBS) for Fault Tolerant Computational Grid

2011 ◽  
pp. 101-116
Author(s):  
Zahid Raza ◽  
Deo P. Vidyarthi
Keyword(s):  
Fault Tolerance ◽  
Performance Optimization ◽  
Large Scale ◽  
Heterogeneous Computing ◽  
Fault Tolerant ◽  
Turnaround Time ◽  
Computational Grid ◽  
Successful Execution ◽  
Computational Resources ◽  
The Cost

Grid is a parallel and distributed computing network system comprising of heterogeneous computing resources spread over multiple administrative domains that offers high throughput computing. Since the Grid operates at a large scale, there is always a possibility of failure ranging from hardware to software. The penalty paid of these failures may be on a very large scale. System needs to be tolerant to various possible failures which, in spite of many precautions, are bound to happen. Replication is a strategy often used to introduce fault tolerance in the system to ensure successful execution of the job, even when some of the computational resources fail. Though replication incurs a heavy cost, a selective degree of replication can offer a good compromise between the performance and the cost. This chapter proposes a co-scheduler that can be integrated with main scheduler for the execution of the jobs submitted to computational Grid. The main scheduler may have any performance optimization criteria; the integration of co-scheduler will be an added advantage towards fault tolerance. The chapter evaluates the performance of the co-scheduler with the main scheduler designed to minimize the turnaround time of a modular job by introducing module replication to counter the effects of node failures in a Grid. Simulation study reveals that the model works well under various conditions resulting in a graceful degradation of the scheduler’s performance with improving the overall reliability offered to the job.

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