In the recently created FreeBSD VPS, the network performance of vnet-enabled jails was significantly lower compared to that of traditional jails. Upon investigation, it appears that there is an issue related to Virtio drivers.
Sometimes your filesystem gets stuck. No operations can be done and a “reboot” will just cause an indefinite waiting time for I/O. There’s a “magical” code that triggers a specific kernel condition - and a reboot.
