title: CPU cores, treads and optimal number of workers - python threading
body: <p>I am beginning to appreciate the usefulness of the threading library on python and I was wondering what was the optimal number of threads to keep open in order to maximise the efficiency of the script I am running. </p>
  
  <p>Please do keep in mind that my one and only priority is speed, I don't need to multitask /do other stuff (think a computing dedicated server)</p>
  
  <p>To be specific, if I run on a 4 cores / 4 threads CPU, will the optimal number of threads be 4? 8? 16? Then again, if I had more than a thread per core (4 core 8 t), would the answer change? Also, does cpu clock influence any of this?</p>
  
  <p>I understand there are a variety of implications on the matter but, as much as my research on the subject went, I still feel to be very much in the dark. (I gathered it's not so simple as n threads = n processes)</p>