perjvm cpu

python lib to collect the all java process running currently only supported Linux IS on a system and then monitor its cpu usage. I wrote the class when I could not fine a easy to use solution and interfacing with java was very difficult.

###Requirements

1. psutil
2. collections
3. logger

##Example class requires the java name pattern like "-Dprogram.name="

1. Compile the java code

javac HelloWorld.java

2. Start the java process

java -Dprogram.name="HelloWorld" HelloWorld

Java example code

public class HelloWorld { 
 public static void main(String[] args) { 
  while(true)
  {
    try {
        Thread.sleep(1000L);
        String foo = "123213 * 1312312313 * 123123123 * 12312 / 123123123123 % 123123 * 234234820394809234 + 123123213123";
        System.out.println("Hello, World");
        } 
    catch(InterruptedException ex) 
        {
        Thread.currentThread().interrupt();
        }
  }
 }
}

python

import PerJvmCpu
ob = PerJvmCpu.PerJvmCpu(name_pattern="-Dprogram.name=", interval=10, exclude_list=['-Didea.paths.selector=PyCharm30'])
for pid in ob.get_pid_details():
   print ob.cpu_stats(pid)

###Once you have the cpu and java process name you can do anything like send them to graphing lib to plot the cpu utilization