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/browser-vas-size`	A browser with 1.5 TB.	Yes --- the opener
`00-pitch/allocate-10TB`	10 TB in a blink, same `RSS`.	Yes --- two terminals
`00-pitch/same-address`	Same address, two values.	Yes --- two terminals
`01-recap/memory-ops`	Allocation changes the list of areas.	If the room needs the recap
`01-recap/malloc-size`	`malloc()` becoming `brk()` or `mmap()`.	If time
`03-virtual-vs-physical/show-mem`	Every process has two sizes.	Yes
`03-virtual-vs-physical/reserve-mem`	`VSZ` moves, `RSS` does not.	Yes --- two terminals
`04-reserve-allocate-map/reserve-allocate`	Touch half, pay for half.	Yes --- two terminals
`04-reserve-allocate-map/page-faults`	One fault per page, once.	Yes
`05-page-table/pagemap`	Your own page table; one frame shared by two processes.	Yes --- `sudo`

Before the lecture¶

for d in 00-pitch/allocate-10TB 00-pitch/same-address 01-recap/memory-ops 01-recap/malloc-size \
         03-virtual-vs-physical/show-mem 03-virtual-vs-physical/reserve-mem \
         04-reserve-allocate-map/reserve-allocate 04-reserve-allocate-map/page-faults \
         05-page-table/pagemap; do ( cd $d && make ); done

Needs gcc, make, pmap, ps, strace, and sudo for the frame numbers in pagemap. Rehearse the two-terminal demos; pidof returns two PIDs if an old run is still waiting at a prompt.