[SPb, Announcement] Meeting with Andrei Pangin - Everything You Wanted to Know About Stack Traces and Hip Dumps

    On Thursday, May 26, at 20:00 in the St. Petersburg office of Luxoft, JUG.ru will meet with Andrey Pangin aka apangin , a leading developer of Odnoklassniki. The topic of the meeting is the JDK features related to Heap bypass and thread stacks.



    Stack Trace and Heap Dump are not only debugging tools, but also doors to the very bowels of the Java virtual machine. The presentation is devoted to JDK features, one way or another connected with heap bypass and stream stacks. It is based on popular questions about the JVM with StackOverflow and real cases from practice.

    • Do stack traces affect performance?
    • How to remove dumps in production without side effects?
    • How do jmap and jstack utilities work internally?
    • Why do all profilers lie, and how to deal with it?
    • How to scan hip using JVMTI and Serviceability Agent?


    Participation is free, registration is here .

    The report, backed up by a live demo and performance tests, will answer these and other questions. You will also learn about the new Stack-Walking API ( JEP 259 ), added in Java 9, and learn about the undocumented features of HotSpot JVM.

    About Speaker


    panginAndrey Pangin aka apangin specializes in creating software for highly loaded servers in the Odnoklassniki project. With enthusiasm delves into the insides of the JVM and JDK. Previously worked at Sun Microsystems on the HotSpot virtual machine. In recent years, he often speaks at Java conferences with reports on high-performance Java solutions and the internals of the Java platform.

    Participation is free, registration is here .

    There will be no online broadcast, there will be a recording. The video will be posted on the JUG.ru Youtube channel a week after the meeting.

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