Memory Usage of of external tools in java

Question

I have a few executable tools. In my Java application I need to launch each of them for a few hundred times and measure their memory consumption based on different inputs. I am using

Runtime.getRuntime().exec(externalToolCommand);

to execute external tools. But I don't know how to measure the max memory usage of the external tools. To make more clear I will exemplify it; Let say I have prism.exe, mrmc.exe, and plasma.exe which are three executable external tools. I have want to know when I launch one of the tools e.g. prism.exe, how much memory it consumes. I don't need to measure my Java application memory consumption. I need only to know the external memory consumption. Thanks.

Answer 1

Try "jvisualvm", you can find it at /bin/jvisualvm.exe

Answer 2

I don't know the exact code but here is what I could think of. On Windows, you can launch a batch script say p.bat from your Java application and launch a powershell script from p.bat say q.ps1 and now you have got access to a powershell script. You can run a process monitor tool(I don't know maybe perfmon...) to measure one time memory consumption of it, log it in a text file. Terminate the process from the script. Do the whole process in loop in your Java application. Finally you have got the file containing the process memory consumption n number of times.
But Beware! it is really expensive as it involves File I/O, context switch back and forth, pipelining on the top.

With powershell, the possibilities are endless. But I am no powershell expert so pardon, I can't write the exact code for you. This answer requires a lot of research on your side on various steps involved.