JVM Memory Structure

Method Area, Heap, Stack, PC Register, Native Stack

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JVM Memory Structure

JVM memory is divided into multiple runtime data areas.

  • Heap
  • Method Area (MetaSpace)
  • Java Stack
  • PC Register
  • Native Method Stack

Code Examples

High-level JVM memory layout

text
1
2JVM Memory:
3- Heap
4- MetaSpace
5- Stack
6- PC Register
7- Native Stack
8

Use Cases

  • Performance tuning
  • Understanding crashes

Common Mistakes to Avoid

  • Confusing MetaSpace with Heap