3/16/2023 0 Comments Webmon jvm![]() The goal of tuning your heap size is to minimize the time that your JVM spends doing garbage collection while maximizing the number of clients that WebLogic Server can handle at a given time. If you set your heap size in accordance with your memory needs, full garbage collection is faster, but occurs more frequently. If you set a large heap size, full garbage collection is slower, but it occurs less frequently. An acceptable rate for garbage collection is application-specific and should be adjusted after analyzing the actual time and frequency of garbage collections. The JVM heap size determines how often and how long the VM spends collecting garbage. A best practice is to tune the time spent doing garbage collection to within 5% of execution time. When an object can no longer be reached from any pointer in the running program, it is considered "garbage" and ready for collection. It is a repository for live objects, dead objects, and free memory. The Java heap is where the objects of a Java program live. See "Performance Documentation For the Java Hotspot Virtual Machine: Threading" at. You can choose from multiple threading models and different methods of synchronization within the model, but this varies from JVM to JVM. Ĭhoices you make about Solaris threading models can have a large impact on the performance of your JVM on Solaris. See the support page for Mixed Client/Server JVMs at. The Supported Configurations pages at are frequently updated and contain the latest certification information on various platforms.įor WebLogic Server heap size tuning details, see Garbage Collection.Ĭhoosing a GC (garbage collection) schemeĭepending on your application, there are a number of GC schemes available for managing your system memory, as described in Choosing a Garbage Collection Scheme.ĭeployments using different JVM versions for the client and server are supported in WebLogic Server. This release of WebLogic Server supports only those JVMs that are J2SE 5.0-compliant. Use only production JVMs on which WebLogic Server has been certified. ![]() ![]() Table 5-1 General JVM Tuning Considerations Tuning Factor ![]()
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