What are some examples of JVM tuning techniques?

What are some examples of JVM tuning techniques?

JVM tuning involves optimizing the Java Virtual Machine for better performance. Some techniques include adjusting heap size, garbage collection settings, and using JIT compiler options.

Can you explain how to adjust the heap size?

To adjust the heap size, you can use the -Xms and -Xmx flags when starting your Java application. For example, -Xms512m -Xmx2048m sets the initial heap size to 512 MB and the maximum to 2048 MB.

What are the different garbage collection options available?

Java offers several garbage collection options, including Serial GC, Parallel GC, CMS (Concurrent Mark-Sweep), and G1 (Garbage-First). Each has its own use cases and performance characteristics.

How can I monitor JVM performance?

You can monitor JVM performance using tools like JVisualVM, JConsole, or by enabling Java Flight Recorder. These tools provide insights into memory usage, thread activity, and garbage collection.