Another, probably more detailed article on optimizing Common Lisp code in SBCL: http://t-b-o-g.blogspot.com/2009/12/brians-brain-on-common-lisp-take-3.html htt

Another, probably more detailed article on optimizing Common Lisp code in SBCL: http://t-b-o-g.blogspot.com/2009/12/brians-brain-on-common-lisp-take-3.html http://t-b-o-g.blogspot.com/2009/12/brians-brain-on-common-l... It highlights the importance of profiling code first.