GC

JVM-memory.md

Andrei Pangin - Memory Footprint of a Java Process

• pmap
• Native Memory Tracking
• Memory areas
  • GC memory consumption
  • Class Loader memory consumption
  • Compiler (JIT)
  • (Threads](https://vimeo.com/364039638#t=23m05s)
  • Symbols
  • Internal/Other
• Demo
• Total Footprint
  • Heap
  • Code Cache
  • GC and Compiler Structures
  • Metaspace
  • Symbol Tables
  • Thread Stacks
  • Direct Buffers
  • Mapped Files
  • Native Libraries
  • Malloc Overhead

JVM Memory footprint

• https://spring.io/blog/2019/03/11/memory-footprint-of-the-jvm
• https://stackoverflow.com/a/53624438
• https://plumbr.io/blog/memory-leaks/why-does-my-java-process-consume-more-memory-than-xmx

JVM Ergonomics

• https://docs.oracle.com/javase/8/docs/technotes/guides/vm/gctuning/ergonomics.html
• https://blogs.oracle.com/java-platform-group/java-se-support-for-docker-cpu-and-memory-limits

NMT

• https://docs.oracle.com/javase/8/docs/technotes/guides/troubleshoot/tooldescr007.html
• https://docs.oracle.com/javase/8/docs/technotes/guides/vm/nmt-8.html

etc

• -XX:+AlwaysPreTouch
• -XX:-AdaptiveSizePolicy
• https://plumbr.io/java-garbage-collection-handbook
• https://plumbr.io/outofmemoryerror
• https://plumbr.io/blog/java/oomkillers-in-docker-are-more-complex-than-you-thought
• https://plumbr.io/blog/memory-leaks/memory-leaks-fallacies-and-misconceptions