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Online Music Store MSE Project Presentation III Presented by: Reshma Sawant Major Professor: Dr. Daniel Andresen

Online Music Store MSE Project Presentation III Presented by: Reshma Sawant Major Professor: Dr. Daniel Andresen 03/11/08 Phase III Presentation Outline Project Overview Brief Review of Phases Action Items from Phase II Implementation/Demo Assessment Evaluation Project Evaluation

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Online Music Store MSE Project Presentation III Presented by: Reshma Sawant Major Professor: Dr. Daniel Andresen

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  1. Online Music StoreMSE Project Presentation IIIPresented by: Reshma Sawant Major Professor: Dr. Daniel Andresen 03/11/08

  2. Phase III Presentation Outline • Project Overview • Brief Review of Phases • Action Items from Phase II • Implementation/Demo • Assessment Evaluation • Project Evaluation • Lessons learned

  3. Project Overview The objective of this project is to design and develop an Online Music Store. • Target: Public Users • Product: Media for Music • User Types: User, Administrator • Functionalities for Users: Browsing, searching, buying products, getting song recommendations, managing personal account • Functionalities for Administrator: Manage Catalog Details, Manage Orders, Manage Shopping Cart

  4. Review of Phases • Phase I: • Requirement Specifications • Phase II: • Designed Web Pages • Created Test Plan • Phase III (Current): • Coding • Testing and Analysis

  5. Action Items from Phase II • Correct multiplicities in Class Diagram • Multiplicity between ShoppingCart Class and CartItem Class should be 1..*

  6. ClassDiagram

  7. Action Items from Phase II 2) Revise SLOC count and Project Duration • Included in Project Evaluation

  8. Implementation & Demo • Technologies Used: • IDE – Microsoft Visual Studio 2005 • Technology - ASP.NET 2.0 • Language – C# • Database – SQL Server 2005

  9. Assessment Evaluation • Manual Testing - To ensure the correctness of various parts of code

  10. Assessment Evaluation • E.g. Register Web Page for User • E.g. Edit Shopping Cart

  11. Assessment Evaluation • Performance Testing • Goal: • Determine load in terms of concurrent users and requests • Determine Response Time – time between the request being initiated for a Web Page to time taken for it to be completely displayed on a user’s browser • Tool Used – JMeter(http://jakarta.apache.org) • Inputs to JMeter: • Number of Users • Ramp-up period – time (sec) to load the full number of users chosen • Loop Count - how many times to repeat the test • E.g. Users = 10, Loop-Count = 20, Ramp-up period = 5 sec => 10 Users will be loaded in 5 sec with total requests = 200 (10*20)

  12. Assessment EvaluationPerformance Testing Factors • Load Type • Peak Load – maximum number of users and requests loaded in short duration (e.g. 5 sec). • Sustained Load – maximum users and requests loaded for longer period (e.g. 5 mins). • Connection • Wireless Connection at 54.0 Mbps • LANConnection at 100.0 Mbps • Web pages Tested • HTML Page (Login Web Page) • Database Intensive Page (Home Page) • Business Logic Page (Shopping Cart Page)

  13. Assessment EvaluationPerformance Testing Environmental Set-up • Machine Configuration • Operating System – Windows XP Professional • Memory – 1GB RAM • 100GB HardDisk • Intel Pentium M Processor 1.7 GHz

  14. Assessment Evaluation Home Page [http://localhost:2416/CDShop/Default.aspx] • Peak Load at Wireless (54 Mbps) vs. LANConnection (100 Mbps) • Note • Loop-Count constant at 20,000 • Ramp-up period of 5 sec • Users – 200, 600, 800, 1000 • Observations • Response Time increases linearly with number of users for both Wireless and LAN • Max no.of users handled by the system before it becomes saturated = 1000 • Response Time is less for LAN due to better bandwidth.

  15. Assessment Evaluation Home Page [http://localhost:2416/CDShop/Default.aspx] • Constant Users vs. Constant Loop-Count for Wireless Connection Users Constant at 200 Loop-Count Constant at 20,000 Loop-Count increased up to 20000 Users – 200, 600, 800, 1000

  16. Assessment Evaluation Home Page [http://localhost:2416/CDShop/Default.aspx] • Observations • Response Time increases rapidly with number of users but not very much when the users are kept constant and only loop-count is increased. • Reason: • If the number of users is kept constant and only the loop-count is increased, the number of requests/sec handled by the server remains constant for every increase in the loop count. • If the users are increased and loop count is kept constant, the requests/sec handled by the server increases with increasing users, but the number of executions remain constant and hence the longer response time.

  17. Assessment Evaluation • Note • Loop-Count constant at 20,000 • Ramp-up period of 5 sec • Users – 200, 600, 800, 1000 • Observations • Response Time increases more for Home Page as compared to Login and Shopping Cart Page • Lowest Response Time for Login Page as no database requests are submitted by the user • Moderate Response Time for Shopping Cart page because there are more computations • Response Time for Shopping Cart Page is approx. 28% more on an average than for Login Page • Response Time for Home Page is approx. 246% more on an average than for Login Page • Comparison of Response Times of all 3 WebPages at Wireless Connection of 54.0Mbps

  18. Assessment Evaluation Home Page [http://localhost:2416/CDShop/Default.aspx] • External Factors affecting Response Time • Varying Network Bandwidth • Limited System Hardware Resources (CPU, RAM, Disks) and Configuration • JMeter Tests and Server running on the same machine

  19. Assessment Evaluation Summary • For Peak Load • Users – 200, 600, 800, 1000 • Loop-Count constant at 20,000 • Ramp-up period = 5 sec • Response Time increases rapidly with number of users but not very much when the users are kept constant and only loop-count is increased. • Response Time is highest for Home page, Intermediate for Shopping Cart Page and Lowest for Login Page

  20. Assessment Evaluation Login Page [http://localhost:2416/CDShop/Login.aspx] • For Sustained Load at Wireless Connection

  21. Project Evaluation • Project Duration (actual) • Phase I = 86 hours • Phase II = 140.5 hours • Phase III = 304.5 hours • Total = 531 hours • Project Duration (in Months) • Estimated at the end of Phase II = 6.5 Months • Actual = 7.5 Months

  22. Project Evaluation • Category BreakDown • Research = 38.5 hours • Design = 37 hours • Coding = 305.5 hours • Testing = 32 hours • Documentation = 118 hours • Total = 531 hours

  23. Project Evaluation • SLOC Count (Actual) – LocMetrics Tool (http://www.locmetrics.com) • C# Code (Including C# auto-generated code) = 2757 • SQL Code = 540 • XML Code = 86 • CSS Code = 412 • Total = 3795 • SLOC Count (Estimated) • At the end of Phase II – 3200 (Based on prototype design in phase I)

  24. Project Experience • Lessons Learned: • New technology • Use of various tools for designing and testing – Visual Studio 2005, JMeter, LocMetrics • Working with UML and Class Diagrams • Entire life cycle of the project– requirement gathering, Design, Coding, Testing and Documentation • Testing applications at different levels

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