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UI Performance Optimization: Identifying Bottlenecks

This paper provides a framework for testers to identify and resolve client-side web application performance issues, ensuring a good user experience. It discusses the importance of quick page load and rendering time, and introduces a tool that captures and analyzes HTTP traffic to identify slow requests and bottlenecks.

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UI Performance Optimization: Identifying Bottlenecks

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  1. UI-Performance Optimization by Identifying its Bottlenecks Akshita Aggarwal Software Developer Co – Author - Deepak Khatri Sr. Test Architect NIIT Technologies

  2. ABSTRACT More and more complexity on the front-end leads to delay. Client side performance issues have direct impact on user experience. So, finding out and resolving all client-side web application’s performance issues are of utmost importance for good user experience. PURPOSE This paper will bring easiness to a tester, with approach to identify potential problematic areas & bottlenecks. How he can find out better and refined solution. How a framework can be built on top of available open sources API to obtain simple and understandable reports.

  3. Need of UI Performance Optimization How long will I have to wait? • Pages should not only load quickly, but also run well. • Role of rendering time is equally important. • Design a framework that captures rendering time. Client expects response to be in less than 100 ms.

  4. Architecture Test Scripts Web Browser Proxy Web Driver Analyzer Reports/ Graphs Selenium Stand Alone Server TOOL

  5. Working Execute Output Selenium Scripts Make the selection for further details For Export (csv format) Design Tool Tester

  6. Key Features • HTTP traffic (response and render time)capture and modification • Efficient for troubleshooting, performance turning • Requires less user time and easy to understand. • Support for any client web Application • Automatic Selenium Scripts • Export summarized data for further usage

  7. Demonstration

  8. Conclusion • This tool can identify slow requests , bottlenecks where requests are blocked and their root cause. • It can be configured separately in the target environment and is well suited for test scripts. • Testers are benefitted as no overhead is required. • Hence it is advisable to profile your web page to find components • that you don’t need or components that can be optimized.

  9. References & Appendix • Little Proxy-free utility to watch and manipulate network traffic • Chrome dev tools for analyzing runtime performance • MSDN-web debugger tool • Google web developers for rendering performance Author Biography Total 6 months+ of IT experience. Software developer with NIIT Technologies. Qualification: PG Degree (MCA). Skilled knowledge and expertise in current computer hardware and software, Performance Testing & Engineering, Automation and few open sources. Q n A

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