What is the best method to evaluate production efficiency that you manage?

I guess all of the above mentioned factors can be included in the process of production efficiency evaluation however more factors like life cycle quality  can also be included

5.

In a business setting, evaluating production efficiency typically involves assessing each phase of the production process. The assessment begins with the acquisition of raw materials and continues through the consumption of those materials as new products are assembled and completed. This involves obtaining the highest quality materials at the best possible prices, then keeping the amount of waste generated during the production to a minimum. This in turn makes it easier to manage the long-run average total cost associated with the production process, and keep the efficiency of the manufacturing effort as high as possible.

PEF={livability*live weight(kg)}/{age(days)*fcr}

5- others ( since one of the above isn't accurate enough to evaluate the efficiency )