hi,
first: linux always tries to cache things, and tries to not have ram unnecessarily empty.
second: i can see you use zfs, which always uses ram for its arc.
by default zfs reserves half of your ram so in your case ~32GiB
for more details see:
https://pve.proxmox.com/wiki/Storage:_ZFS
hello
root@vds1:~# zpool status
pool: rpool
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
sda2 ONLINE 0 0 0
sdb ONLINE 0 0 0
sdc ONLINE 0 0 0
sdd ONLINE 0 0 0
errors: No known data errors
root@vds1:~#
how to use this more closed ?
root@vds1:~# free -m
total used free shared buffers cached
Mem: 64348 39062 25285 93 4 366
-/+ buffers/cache: 38691 25656
Swap: 8191 0 8191
root@vds1:~#
root@vds1:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 10M 0 10M 0% /dev
tmpfs 13G 9.1M 13G 1% /run
rpool/ROOT/pve-1 1.7T 20G 1.6T 2% /
tmpfs 32G 43M 32G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 32G 0 32G 0% /sys/fs/cgroup
rpool 1.6T 128K 1.6T 1% /rpool
rpool/ROOT 1.6T 128K 1.6T 1% /rpool/ROOT
rpool/data 1.6T 128K 1.6T 1% /rpool/data
rpool/data/subvol-100-disk-1 70G 4.6G 66G 7% /rpool/data/subvol-100-disk-1
rpool/data/subvol-101-disk-1 70G 159M 70G 1% /rpool/data/subvol-101-disk-1
cgmfs 100K 0 100K 0% /run/cgmanager/fs
tmpfs 100K 0 100K 0% /run/lxcfs/controllers
/dev/fuse 30M 16K 30M 1% /etc/pve
root@vds1:~#