You are looking for the command to figure out the swap space size and the utilization. You are at the right place! 🙂
There are many commands, in which you can execute. Do refer them as below,
swapon Command
# swapon -s
Filename Type Size Used Priority
/dev/dm-0 partition 20971516 16904 -1
/proc/swaps Command
# more /proc/swaps
Filename Type Size Used Priority
/dev/dm-0 partition 20971516 16904 -1
# cat /proc/swaps
Filename Type Size Used Priority
/dev/dm-0 partition 20971516 16904 -1
free -m/h/g Command
# free -m
total used free shared buff/cache available
Mem: 31918 14332 4184 8509 13400 8613
Swap: 20479 16 20463
top Command
# top
top - 11:52:23 up 119 days, 7:13, 1 user, load average: 0.26, 0.41, 0.40
Tasks: 398 total, 1 running, 397 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.2 us, 0.0 sy, 0.0 ni, 99.8 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
MiB Mem : 31918.30+total, 4186.164 free, 14331.21+used, 13400.93+buff/cache
MiB Swap: 20479.99+total, 20463.48+free, 16.508 used. 8615.172 avail Mem
/proc/meminfo Command
# grep Swap /proc/meminfo
SwapCached: 1440 kB
SwapTotal: 20971516 kB
SwapFree: 20954612 kB
vmstat Command
# vmstat
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
0 0 16904 4282516 5360 13717796 0 0 0 4 0 0 2 0 97 0 0
