You might see the following Java error if you are running out of heap space: To ensure maximum performance during benchmarking, you might set high heap size values to ensure that garbage collection does not occur during the entire run of the benchmark. 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.
INVALID MAXIMUM HEAP SIZE MINECRAFT FULL
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.
INVALID MAXIMUM HEAP SIZE MINECRAFT FREE
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. See " Supported Configurations" in What's New in Oracle WebLogic Server for links to the latest supported mixed client/server JVMs.Ĭhoices you make about Solaris threading models can have a large impact on the performance of your JVM on Solaris. See "Supported Configurations" in What's New in Oracle WebLogic Server for links to 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 Java SE 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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