jPrime is a conference organized by the Bulgarian Java User Group, focusing on Java and JVM-related topics. Architect Ram Lakshmanan led a workshop on analyzing Java thread dumps to identify production issues, utilizing real-world case studies and engaging attendees with lab exercises for hands-on troubleshooting experience.
jPrime is a Java-focused conference organized by the Bulgarian Java User Group, featuring talks on JVM languages, mobile, and web practices. Architect Ram Lakshmanan presented on the nine types of java.lang.OutOfMemoryError, providing insights into their causes, diagnostics, and solutions, aimed at enhancing Java application efficiency.
In this insightful session, Ram walked through the most prevalent performance issues faced by Java developers. He uncovered the root causes behind these challenges and offered actionable solutions to optimize Java application performance. This talk provided valuable takeaways to improve application efficiency and reliability, making it an excellent opportunity to equip yourself with practical knowledge and tools to tackle Java performance bottlenecks effectively.
In our everyday Java programming, we rely on familiar APIs without fully realizing their hidden performance impacts. This session aimed to unveil the concealed performance aspects of common Java APIs and shed light on how they can influence your application's performance.
A major shipping/logistics company faced issues with their Java 6 JBoss Cluster on RedHat Linux, where instances frequently dropped from the cluster due to long pauses during Full Garbage Collection. This led users to repeatedly sign out and log in. Increasing the Permanent Generation space resolved the issue, restoring normal functionality.
A major North American shipping monopoly experienced lengthy batch job processing times after migrating to Java, impacting operations in China and US online transactions. Engaged to resolve these issues, I successfully reduced the processing time from 16:04 hours to 3:14 hours within two months, even while accommodating new requirements and increased traffic.
Workday, a leader in cloud ERP for Finance, HR, and planning, hosted a guest lecture by architect Ram Lakshmanan on February 21, 2019, at their Pleasanton, CA headquarters. The two-hour presentation on JVM performance engineering and troubleshooting was well-received by Workday's SRE and Performance engineers. Photographs from the event are included.
TD Bank, a leading Canadian bank, utilizes GCeasy, FastThread, and HeapHero products. Recently, Ram Lakshmanan, our architect, delivered a training session for their performance engineers in Toronto, focusing on a critical system review of a core application. The engineers showed enthusiasm and engaged actively during the training.
CloudBees, the leader in Jenkins CI/CD pipeline, has enhanced garbage collection performance utilizing GCeasy. Ryan Smith, a Sr. DevOps Engineer at CloudBees, shares insights from his experience optimizing garbage collection performance, highlighting the significance of these improvements for the industry.
Uber is facing significant performance issues due to increased traffic, including memory bottlenecks like long garbage collection pauses and memory leaks. Their engineering team shared insights on optimization strategies, employing tools like GCeasy to address problems. Notably, they identified a misconfigured thread causing excessive object creation through extensive manual analysis, highlighting the complexity of managing numerous threads.