Demos

One directory per demo: the sources, a Makefile, the commands to run and the question to ask about the result. Build a demo with make inside its directory.

Demo	Shows	Run it live?
00-pitch/memory-use	A browser holds gigabytes.	Yes --- the opener
00-pitch/buffer-cache	Memory you do not see is working.	free -h only
00-pitch/cache-memory	Same instructions, nine times slower.	Yes
00-pitch/memory-leak	Forty bytes at a time, found by valgrind.	Yes
02-memory-operations/basic-memory-operations	Execute is a permission too.	Yes --- let it crash
02-memory-operations/memory-access	Permissions are per area.	If time
03-address-space/see-pmap	The list of areas, static and dynamic.	Yes --- two terminals
04-allocation-time/allocation-types	Where each variable lands, and who decided.	Yes
05-runtime-allocation/allocation	Stack, heap and mapping changing size.	Yes --- two terminals
05-runtime-allocation/malloc-kb	malloc() becoming brk() or mmap().	Yes

Before the lecture

for d in 00-pitch/cache-memory 00-pitch/memory-leak 02-memory-operations/basic-memory-operations \
         02-memory-operations/memory-access 03-address-space/see-pmap \
         04-allocation-time/allocation-types 05-runtime-allocation/allocation \
         05-runtime-allocation/malloc-kb; do ( cd $d && make ); done

Needs gcc, make, pmap, strace, valgrind, gdb, and perf (sudo, for the cache-miss counts). Rehearse the two-terminal demos; pidof returns two PIDs if an old run is still waiting at a prompt.