Sreekrishna Duddumpudi

Over a decade of IT experience specializing in Performance Engineering and Testing services. Successfully led the establishment of Testing Center of Excellence (CoE) efforts within banking and retail domains. Provides thought leadership and expertise in Non-Functional Testing, excels in defining appropriate testing strategies for complex software systems. Effectively communicates QA status in Daily Scrum Meetings, highlighting risks and delays. Strong experience in performance testing tools and methodologies across various technology platforms. Expertise includes monitoring Windows/Unix environments, analyzing test results, troubleshooting issues, and leading tuning activities for optimal performance outcomes.

• Application Performance Testing: Interaction with multiple stake holders to understand the Client requirement and their production environment (existing or proposed) to provide a suitable strategy to test the performance of the application. Understanding the business of the client through interactions with the Business Analysts, Project Management teams and identify the business case scenarios for scoping. Skilled in various automation tools and monitoring tools (Sitescope, Wily-Introscope, AppDynamics, DynaTrace etc). Have a good experience on latest technologies like open Dashboard , AWS - Cloud Watch monitoring tools on Cloud environment. Automation of the business scenarios into test scripts using performance automation tools like Load-Runner , & Jmeter. Well versed in using Load Runner’s Web/HTTP, Web Services, Tru Client & Citrix protocols. Executing multiple tests (load, stress, soak, Scalability, failover, Chaos) and monitoring the test. Analyzing the results and provide report with recommendations (if any) for better performance. Experience on web Analysis / debugging tools Fiddler, Http Watch, Dynatrace Server.
• Application Performance Management: Setting up of monitoring tools (App Dynamics, Splunk) and Setting up of alerts, emails and snapshots for above threshold utilization, errors (critical) and user defined system anomalies. Monitoring the application health, performance and reporting the discrepancies to the concerned stake holders. Design the workload models like Smoke, Load, Volume and Endurance Tests using Performance center, ALM, Controller, and Jmeter and analyzed the client and server-side performance results. Extending support to the project team with Root Cause Analysis of the observed issues. Analyze the application behavior and project future needs of hardware.
• Analytics: Analysis of the performance test results including client side (User count, Server Hits, Response Times, Throughput, Transactional information) and server side (CPU, Memory, Network, Disk utilization). Analysis of thread dump and heap dump logs from application server. Provided a detailed Non-Functional analysis report which helped in fixing the memory leaks, time consuming methods, web service calls, network attributes, & CPU utilization and other performance aspects. Performing Root Cause Analysis. Data extraction from application servers. Data preparation by mining the data from raw server logs (profiling, message, catalina, access logs) and creating usable data. Analyzing the information from the logs. Analysis report includes. Application behavior - User load sustenance, Response times, Request processing capacity. System behavior - CPU utilization, Memory Utilization, Threads utilization, JVM utilization, DB Response Times. Issues - Memory Leaks, High CPU utilization, Thread utilization, Heap utilization, High Response Time. Errors - HTTP errors, Data Errors, System errors.