Testing Benchmark ZFS Pool

Does anyone know how to test the benckmark on a ZFS-Pool? And how can I test it on a Linux VM and Windows VM?

In this PDF I saw the command has been used: https://www.proxmox.com/de/downloads/item/proxmox-ve-zfs-benchmark-2020

command: fio --ioengine=libaio --filename=/dev/sdx --direct=1 --sync=1 --rw=write --bs=4K --numjobs=1 --iodepth=1 --runtime=60 --time_based --name=fio

But how can I test the specific Pool or a Linux/windows VM?

Thank you guys!