Swap

OpenAdmin > System > Swap lets Administrators view current swap usage, change the swap file allocation, and drop (clear) swap.

Current usage​

Shows total/used/free swap (as reported by free -m) and a table of every active swap device (name, type, size, used, priority, from swapon --show). The alert threshold shown here is the same swap= value used by Sentinel's own swap check.

Change allocation​

Recreates the managed swap file (/swapfile by default) at the requested size and re-enables it, adding it to /etc/fstab if it isn't already there. This briefly disables swap while the file is recreated.

Drop swap​

Runs swapoff -a; swapon -a, the same cleanup Sentinel performs automatically when swap usage crosses its threshold. This moves swapped-out pages back into RAM without changing the swap size.