Java/JVM (HotSpot): Is there a way to save JIT performance gains at compile time?

Question

When I measure the throughput of my Java application, I see a 50% performance increase over time:

• For the first 100K messages, I get ~3,000 messages per second

Answer 1

You could try adapting your app to run it with Nailgun. Instead of invoking your app against a fresh JVM each time you invoke it against a Nailgun server which is a long-lived JVM. The second time you invoke your app, the nailgun JVM will have optimized the paths in your classes and should therefore execute a lot faster than it would from fresh.