NextPrevUpTopContentsIndex Determining storage usage

To determine storage usage (useful when benchmarking), use the functions room , total-allocation and find-object-size . The function sys:room-values is suitable for programmatic use: it returns the values that room prints.

In 32-bit LispWorks, memory-growth-margin returns the amount by which the Lisp heap can grow, if set-maximum-memory has been called.

LispWorks User Guide - 11 Mar 2008