SEE ALSO: The State of Java in 2019: “The rate of change is higher than ever before” If there is a performance hit, why would anyone use 64-bit JVM? On AMD64 and EM64T platforms this difference ranges from 0-15% depending on the amount of pointer accessing your application performs.” Generally, the benefits of being able to address larger amounts of memory come with a small performance loss in 64-bit VMs versus running the same application on a 32-bit VM. The performance difference comparing an application running on a 64-bit platform versus a 32-bit platform on SPARC is on the order of 10-20% degradation when you move to a 64-bit VM. Below is the excerpt from Oracle JDK documentation regarding 64-bit JVM performance: 64-bit JVM can have a small performance degradation than 32-bit JVM. Most of us think 64-bit is bigger than 32-bit, thus 64-bit JVM performance will be better than 32-bit JVM performance. Does 64-bit JVM perform better than 32-bit JVM? The subtle difference between 32-bit JVM and 64-bit JVM wouldn’t make much difference to your application. If you aren’t building a performance-critical application, you don’t have to understand the difference. Do I need to understand the difference between 32-bit JVM and 64-bit JVM? We thought we will try to clarify them through this question and answer article. There are a few distinct differences and subtle nuances between 32-bit JVM and 64-bit JVM.
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