valgrind

TLDR

Use the (default) Memcheck tool to show a diagnostic of memory usage by program

$ valgrind [program]

Use Memcheck to report all possible memory leaks of program in full detail

$ valgrind --leak-check=full --show-leak-kinds=all [program]

Use the Cachegrind tool to profile and log CPU cache operations of program

$ valgrind --tool=cachegrind [program]

Use the Massif tool to profile and log heap memory and stack usage of program

$ valgrind --tool=massif --stacks=yes [program]