In our previous Foundations update @mclemenceau shared an update on some of the experiments we conducted during the Plucky Puffin cycle, in particular about our decision to revert the change to the -O3 optimization level by default on amd64. As promised here is a few more details about what went into this project, methods used and challenges encountered. Results of -O3 experiment tl;dr Performance is slightly worse and packages are slightly bigger with -O3 by default and we will revert the chan...