Mem names a function, with lambda list (&REST WORDS):
Display some memory usage and other debugging type information as an pop-up message.
This is an abbreviated version of the output of ROOM (see the Common Lisp HyperSpec) on the server.
#mem
#mem
This server is Inktomi. Dynamic space usage is: 756,315,840 bytes. Immobile space usage is: 31,537,408 bytes (134,512 bytes overhead). Read-only space usage is: 0 bytes. Static space usage is: 1,344 bytes. Control stack usage is: 9,656 bytes. Binding stack usage is: 832 bytes. Control and binding stack usage is for the current thread only. Garbage collection is currently enabled.
Note that the output of ROOM (see the Common Lisp HyperSpec) can vary wildly depending on the compiler used; the above is from a build of Tootsville compiled under SBCL, which is the expected environment, but there is no guarantee that this will not change in future.
In Romance 1, we were running in a Java Virtual Machine (JVM), so the output of mem was quite differently formatted.
Defined in file src/infinity/legacy-ops.lisp.