title: Standard Technique /Algorithm for monitoring performance
body: <p>I am trying to monitor CPU / Memory process and etc.</p>
  
  <p>Are there studies or article on the approach of monitoring such systems?</p>
  
  <p>For example..</p>
  
  <p>Duration it stays above 80% before sending an alert.... and after an alert.. under what circumstances it will be resolved and etc.</p>
  
  <p>Is more of an literature review rather than jumping into the implementations aspect.</p>
  
  <p>Project is written in Java</p>