JVM Configuration: Best Parameters & Settings

JVM parameters can be adjusted based on the specific application requirements and system resources. Here are some common examples of JVM parameter configurations.

1. Heap memory size: You can set the initial and maximum size of the JVM heap memory using the -Xms and -Xmx parameters, for example:

Allocate a minimum of 512MB and a maximum of 1024MB of memory.

This denotes setting the initial size of heap memory to 512MB, and the maximum size to 1GB.

1. Garbage Collector: You can specify the use of the G1 garbage collector by using the -XX:+UseG1GC parameter, for example:

Enable the use of G1 Garbage Collector.

1. Thread stack size: The size of the thread stack can be set by using the -Xss parameter, for example:

-Xss1m indicates a maximum stack size of 1 megabyte.

Setting the size of the thread stack to 1MB.

1. Size of metadata area: You can set the initial and maximum sizes of the metadata area using the -XX:MetaspaceSize and -XX:MaxMetaspaceSize parameters, for example:

Set the Metaspace initial size to 256MB and the maximum size to 512MB.

This sets the initial size of the metadata area to 256MB and the maximum size to 512MB.

1. Optimizing parameters: You can adjust some optimization parameters based on the specific needs of the application, such as:

Enable 4 parallel garbage collection threads, set the maximum GC pause time to 500 milliseconds, and adjust the GC time ratio to 19.

These parameters can be used to adjust the number of threads, maximum pause time, and the ratio of GC time for garbage collectors.

It is important to carefully test and evaluate the impact of configuring JVM parameters on application performance to ensure optimal performance and stability.