Proxmox ZFS memory allocation (ARC)

https://pve.proxmox.com/wiki/ZFS_on_Linux#sysadmin_zfs_limit_memory_usage

To determine the size of the ARC, look at /proc/spl/kstat/zfs/arcstats (assuming procfs mounted on /proc, as customary), specifically the values for c, c_max and size.

• c is the target size of the ARC in bytes
• c_max is the maximum size of the ARC in bytes
• size is the current size of the ARC in bytes