Howto get memory usage of a started process

Question

I try to get the memory usage of a process started via Java.
Can someone give me a hint how to do it for the example Notepad.exe?

    // Memoryusage of the Java programm
    Runtime runtime=Runtime.getRuntime();
    total = runtime.totalMemory();
    System.out.println("System Memory: " + total);

    ProcessBuilder builder = new ProcessBuilder("notepad.exe");
    Process p = builder.start();

Thanks for your help!

score 1 · Answer 1 · edited May 23 '17 at 12:16

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this post has your answer Java ProcessBuilder memory

quoting top answer:

The new process runs outside the Java process that started it. Allocation of memory to the new process is managed by the operating system, as part of process management. The Java class ProcessBuilder, which provides an interface for starting and communicating with the new process, runs inside the Java process.

edited May 23 '17 at 12:16

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answered Apr 26 '13 at 13:53

Philipp Sander

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So there is no other way then starting an other process (also outside of java) to get the memory usage? – user1193134 Apr 26 '13 at 13:55
not with java. you could try solving the problem with c oder c++ – Philipp Sander Apr 26 '13 at 14:01

score 1 · Answer 2 · answered Apr 26 '13 at 13:54

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You could run a system command and dump it's output in a file. Then, parse this file to find the memory usage.

answered Apr 26 '13 at 13:54

P. Lalonde

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score 0 · Accepted Answer · edited May 23 '17 at 12:00

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This question here including

   ProcessBuilder pb = new ProcessBuilder("cmd.exe",  "/C", "tasklist /fi \"IMAGENAME eq notepad.exe\" /NH");

solved my problem.

edited May 23 '17 at 12:00

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answered Apr 26 '13 at 14:55

user1193134

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Howto get memory usage of a started process

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