[racket] looking for specific racket programs

hello racket users, i'm looking for a specific type of racket programs
to test my garbage collector. particularly, programs that have large
working sets (GBs) and typically modify only a small portion of that
working set. please let me know if you have or know where i can find
such a program written in racket.

server or data processing/scientific computing programs sometimes fall
into this category.

thank you!