This presentation is based on my article : http://jyops.blogspot.in/2012/09/java-memory-model-simplified.html. We will have an inside look at the working of JVM Garbage Collection with a demo.

1. JVM Garbage Collection Explained
Manu PK
@manupk12
http://www.jyops.blogspot.in/
Eclipse Day India 2013 - Sept 27, 2013

2. About Me

3. Agenda
 Overview of memory allocations in JVM
 Java Profiling tools and Introduction to VisualVM
 Demo: Using VisualGC plug-in inside Java VisualVM

4. Overview of memory allocations in JVM
 Stack and Heap memory in Java
 Hey Object where do you live?
 Objects are created on the heap, and only references
(which in turn are primitives) are passed around on the
stack.

5. Java Profiling tools and Introduction to
VisualVM

6. Using VisualGC plug-in inside Java
VisualVM
 Demo – Java Visual VM and Visual GC
 The Memory Tester App – You can get this from here.
 GC Lifecycle
 Object state transition from Eden to Survivor space – Old
Gen.

7. Demo Explained: GC Indicators
 Garbage Collection Concepts

8. Questions / Comments /
Feedback
@manupk12| manu.pk@outlook.com
Slides @
http://www.slideshare.net/pkmanu

9. References
 Java Memory Profiling Simplified
 JVM Memory Structure
 VisualVM performance tuning tool
 Understanding Java Garbage Collection
 Java Garbage Collection Basics
 Java theory and practice: A brief history of garbage
collection
 Memory Management in the Java HotSpot™ Virtual
Machine

10. Thank You
for Listening