These functions and variables give information about the total amount of memory allocation that Emacs has done, broken down by data type. Note the difference between these and the values returned by garbage-collect; those count objects that currently exist, but these count the number or size of all allocations, including those for objects that have since been freed.
The total number of cons cells that have been allocated so far in this Emacs session.
The total number of floats that have been allocated so far in this Emacs session.
The total number of vector cells that have been allocated so far in this Emacs session. This includes vector-like objects such as markers and overlays, plus certain objects not visible to users.
The total number of symbols that have been allocated so far in this Emacs session.
The total number of string characters that have been allocated so far in this session.
The total number of intervals that have been allocated so far in this Emacs session.
The total number of strings that have been allocated so far in this Emacs session.
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Licensed under the GNU GPL license.
https://www.gnu.org/software/emacs/manual/html_node/elisp/Memory-Usage.html