Find the memory allocated by the JVM

Question

I am looking for an easy way to find out how much memory the JVM on my computer has allocated to a specific process, i have tried using VisualVM, but it cannot find the process.

I should mention that this it's running a Windows Service, not a regular process.

Any suggestions ?

Thank in advance.

Answer 1

there is a command that comes with the JRE called jps which you can use to see all the running java processes. using jps with -v gives you the launch parameters of each process.

You can see here the launch parameters which will tell you the memory usage of each process.

This command should run also on Windows, just replace the terminal with a command prompt.

Answer 2

I use in android (if you want to know a programatic way):

// get the total memory for my app
long total = Runtime.getRuntime().totalMemory();
// get the free memory available
long free = Runtime.getRuntime().freeMemory();

// some simple arithmetic to see how much i use
long used = total - free;

System.out.println("Used memory in bytes: " + used);

Works for the PC too(just tested)!