You can pass 600+ arguments to JVM just around Garbage collection and memory. It’s way too many arguments for anyone to digest and comprehend. In all these 4 videos, 7 important JVM arguments that will boost your Java/Scala/Jython application performances are shared.
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Debug/Diagnostic information about the application and JVM instance is published in the health check status page. In the health check status page, the following information is printed in the JSON format:
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jstat is a simple utility tool, that is present in JDK to provide JVM performance-related statistics like garbage collection, compilation activities. The major strength of jstat is its ability to capture these metrics dynamically when JVM is running without any pre-requisite instrumentation. What do we mean by it? Say for example if you want to capture garbage collection related statistics, you need to pass below arguments before you start the JVM:
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Heap dump is a snapshot of the Java memory. It contains information about the Java objects and classes in the heap at the moment the snapshot is triggered. It’s vital artifact to diagnose any Java memory related problems.
Continue reading “HOW TO CAPTURE HEAP DUMP? – JMAP, – XX:+HEAPDUMPONOUTOFMEMORYERROR”
Java Virtual Machine (JVM) is the most popular programming platform in the world. It empowers thousands of enterprises to run their mission-critical applications. However, JVM is still a black box to most engineers.
Continue reading “JAVA PERFORMANCE & TROUBLESHOOTING TRAINING”