Longer execution through Java shell than console?
- by czuk
I have a script in Python which do some computations. When I run this script in console it takes about 7 minutes to complete but when I run it thought Java shell it takes three times longer. I use following code to execute the script in Java:
this.p = Runtime.getRuntime().exec("script.py --batch", envp);
this.input = new BufferedReader(new InputStreamReader(p.getInputStream()));
this.output = new BufferedWriter(new OutputStreamWriter(p.getOutputStream()));
this.error = new BufferedReader(new InputStreamReader(p.getErrorStream()));
Do you have any suggestion why the Python script runs three time longer in Java than in a console?
update
The computation goes as follow:
Java sends data to the Python.
Python reads the data.
Python generates a decision tree --- this is a long operation.
Python sends a confirmation that the tree is ready.
Java receives the confirmation.
Later there is a series of communications between Java and Python but it takes only several second.
