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Optimise Proxmox Server Performance

Here you can find some useful tips to improve the performance of your Proxmox server.

Optimize SWAP

To get optimal performance, the SWAP memory should be set up correctly. The Proxmox server loves to use SWAP memory, but this can accelerate the wear of the SSD.

Set Swappiness to 0 so that the SWAP memory is activated just before the RAM runs out.

sysctl vm.swappiness=1
swapoff -a
swapon -a

Optimize ZFS memory

ZFS uses 50% of the memory by default. Often only 8 to 12 GByte RAM is sufficient for ZFS. To adjust the memory do the following:

root# cat '/sys/module/zfs/parameters/zfs_arc_max'
12884901888
root# update-initramfs -u

then restart the server. Then check the memory usage in the Proxmox overview.