How to Quantify Scalability The Universal Scalability Law (USL) The purpose of models is not to fit the data but to sharpen the questions. —Sam Karlin This page is intended to supplement the following Chapters in my Guerrilla Capacity Planning book [Gunther 2007]: Chap. 4: Scalability: A Quantitative Approach Chap. 5: Evaluating Scalability Parameters Chap. 6: Software Scalability as well as the n