sb-sprof-ui is a CLIM frontend for the statistical profiler contrib included with SBCL. Some notes and a screen shot are available in a blog entry by the author.

sb-sprof-ui is no longer maintained, and is very unlikely to work with the latest releases of SBCL, so the asdf-install link has been removed. If for some reason you you wish to install the latest release, you should download and install the package manually.