What is GC tuning basics in Java?

Garbage Collection (GC) is an essential component of Java that automatically manages memory, reclaiming and freeing memory not in use. Tuning GC can significantly improve the performance of Java applications. Here are some basic concepts of GC tuning:

• Heap Size: Configuring the heap size is crucial. The initial and maximum heap sizes can be set using -Xms and -Xmx flags respectively.
• Garbage Collector Types: Java provides different types of garbage collectors (like Serial, Parallel, CMS, G1) optimized for various scenarios. Choosing the right GC can impact application performance.
• GC Logs: Enabling GC logging helps in monitoring the performance and identifying issues. Use -Xlog:gc to activate logging.
• Minor and Major Collection: Understanding the difference between minor GC (collecting young generation) and major GC (collecting entire heap) is vital for tuning.
• Tuning Parameters: Parameters like survivor ratio, tenuring threshold, and more can be adjusted based on application needs.

Proper GC tuning not only optimizes memory usage but also enhances the overall application responsiveness.