Automatic Garbage Collection in Java allows developers to focus on business logic code without worrying about memory deallocation. However, GC pauses can hinder application performance. Tips to reduce pause times include tuning JVM arguments, optimizing heap size, choosing the right GC algorithm, adjusting memory regions, and addressing GC events. Additionally, optimizing system resources and reducing object creation rate can significantly improve GC performance.
Throughput measures productive work done by an application over time, distinguishing it from non-productive tasks such as garbage collection (GC). If 2 minutes out of 60 minutes are spent on GC, throughput drops to 96.67%. Poor throughput can result from long GC pauses, memory leaks, consecutive full GCs, or resource contention.
Long GC pauses hinder application performance, impacting SLAs and user experience. Key causes include high object creation rates, undersized young generations, unsuitable GC algorithms, excessive memory swapping, and inadequate GC threads. Solutions involve optimizing object creation, adjusting young generation size, and selecting efficient GC strategies to minimize pauses and enhance stability.