See the book for exercises using mem.c
and vmstat
$ /sbin/swapon -s
Filename Type Size Used Priority
/dev/md1 partition 7806972 827184 -2
$ cat /proc/swaps
Filename Type Size Used Priority
/dev/md1 partition 7806972 827184 -2
$ top
top - 12:11:30 up 10 days, 4:36, 6 users, load average: 0.09, 0.42, 0.42
Tasks: 286 total, 1 running, 220 sleeping, 4 stopped, 0 zombie
%Cpu(s): 1.4 us, 1.1 sy, 0.0 ni, 97.4 id, 0.1 wa, 0.0 hi, 0.1 si, 0.0 st
KiB Mem : 16188300 total, 2665948 free, 1447960 used, 12074392 buff/cache
KiB Swap: 7806972 total, 6979788 free, 827184 used. 14136572 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11226 perry 20 0 44216 3936 3264 R 12.5 0.0 0:00.03 top
2488 perry 20 0 3944640 334564 74652 S 6.2 2.1 275:49.35 gnome-shell
1 root 20 0 225676 6100 3968 S 0.0 0.0 2:11.45 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.33 kthreadd
...
