The JVM, (the client VM, server VM, and minimal VM) were supported for configurationsĬommonly used as clients, as servers, and for embedded systems.
In Oracle Java Runtime Environment (JRE) 8 and earlier, different implementations of Thread synchronization: Java HotSpot technology provides a thread-handling capability that is designed to scale for use in large, shared-memory multiprocessor servers.Rapid memory allocation and garbage collection: Java HotSpot technology provides rapid memory allocation for objects and fast, efficient, state-of-the-art garbage collectors.
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The Java HotSpot VM uses the adaptive compiler to decide how to optimize compiled code with techniques such as inlining. The Java HotSpot VM compiles the performance-critical portions of the code for a boost in performance, but does not compile the seldom-used code (most of the application). When the application runs, the code is analyzed to detect performance bottlenecks, or hot spots.
So could anyone explain the difference between these two VMs? I've tried to make all the parameters the same on both machine, and now, the only thing different between them seems to be this JVM. This chapter describes the implementation of the Java Virtual Machine (JVM) and the main features of the Java HotSpot technology: Adaptive compiler: A standard interpreter is used to launch the applications. And from the JVisualVM, I could see the used heap just explosed suddendly, GC activities increase, it feels like the VM is doing some GC work. Java(TM) SE Runtime Environment (build 1.7.051-b13) Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode) So I opened the java control panel and added the 32bit JVM to the user installed JRE (system tab does not allow me to change anything even if running as administrator), but nothing changes.
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As its name implies, it is tuned for best performance when running applications in a client environment by reducing application start-up time and memory footprint. It delivers the optimal performance for Java applications using many advanced techniques, incorporating a state-of-the-art memory model, garbage collector, and adaptive optimizer. The Java HoSpot Client VM is the default virtual machine of the Java 2 SDK and Java 2 Runtime Environment. And I set the same JVM options for these 2 VMs. The Java HotSpot Virtual Machine is Suns VM for the Java platform. My application needs to deal with large number of message import(I used a blocking executor, kept both queue and threadPool size very small).
As in the title, I have one spring-mvc application which runs on both VMs.
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