You should therefore not combine testing different JDKs with additional tunings of applications, reconfiguration of the environment, or modifications to the code or the choice of third-party frameworks or libraries in the application. When doing a comparative evaluation, you want to make sure you are measuring one change at a time. Measure at what point your JVM has reached optimal speed and only start measuring your business metrics after that point, using the same (maximum) warmup period for all JDK configurations. ![]() Azul Zulu Prime can be slower or faster than OpenJDK to warm up your code to full speed, depending on the options used. Of course, this is not possible at all times, in which case lab testing can be used as long as the test results are providing the right insights to predict the impact when deploying Azul Zulu Prime in production.Īlso make sure you are running a long enough test that both systems are completely warmed up. We strongly recommend production testing, to be 100% sure of the differences that can be achieved. When comparing Azul Zulu Prime to different JDKs, the goal of your evaluation should be the testing of your application under real-world conditions. In this article, you will learn about best practices for comparative evaluations between JDK setups, whether they be different configurations in a single JDK or comparing Azul Zulu Prime Builds of OpenJDK (Azul Zulu Prime) to OpenJDK itself.īy following this guide, you will be able to establish credible evidence that Azul Zulu Prime improves aspects of application behavior to a degree that justifies using it within your organization. ![]() Choosing between them can have a huge impact on the capabilities or performance of your environments and applications. In today’s Java ecosystem, you have a wide range of possible runtimes. Frank Delporte is a Java Champion, Java developer, technical writer at Azul, blogger, author of "Getting started with Java on Raspberry Pi", and contributor to Pi4J.
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