The article explains the differences between 32-bit and 64-bit JVMs, noting that for non-performance critical applications, understanding these differences may be unnecessary. While 64-bit JVMs can handle more memory, they may experience slight performance degradation compared to 32-bit JVMs. Proper configuration and testing are essential when migrating to 64-bit JVM.
Full GC in JVM is crucial for memory management but can severely impact application performance due to high CPU consumption and application thread pauses. Consecutive full GCs typically indicate insufficient heap size allocation. Solutions include increasing JVM heap size, enhancing Perm Gen/metaspace size, or adding more JVM instances. Validation is essential.