Swap

Before creating swapfile:

top - 20:54:55 up 5 min,  1 user,  load average: 0.79, 0.90, 0.47
Tasks: 222 total,   1 running, 221 sleeping,   0 stopped,   0 zombie
%Cpu(s):  8.3 us,  3.4 sy,  0.0 ni, 87.0 id,  1.2 wa,  0.0 hi,  0.2 si,  0.0 st
KiB Mem :  1924156 total,    83764 free,  1266376 used,   574016 buff/cache
KiB Swap:        0 total,        0 free,        0 used.   213768 avail Mem

After creating swapfile:

top - 21:28:08 up 39 min,  1 user,  load average: 0.80, 0.63, 0.57
Tasks: 228 total,   2 running, 225 sleeping,   0 stopped,   1 zombie
%Cpu(s): 11.2 us,  4.3 sy,  0.0 ni, 83.6 id,  0.8 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :  1924156 total,    86756 free,  1423568 used,   413832 buff/cache
KiB Swap:  2097148 total,  1831084 free,   266064 used.   135612 avail Mem