Swappiness
Not a percentile, but a level of aggressiveness about swapping. This setting can improve drastically performances when ZFS filesystem is in use.
More information about this can be found in Proxmox VE Wiki: Swap on ZFS
| Value | Behavior |
|---|---|
| 0 | The kernel will swap only to avoid an out of memory condition |
| 1 | Minimum amount of swapping without disabling it entirely |
| 10 | Recommended value to improve performance when sufficient memory exists in a system |
| 60 | The default value |
| 100 | The kernel will swap aggressively |
Temporary Set
Run this command on a bash console:
Setting will be active until next host shutdown.
Permanent set
Add line at the end of /etc/sysctl.conf file
where 10 is the chosen level of swappiness