FreeBSD Proxmox vs FreeBSD: Which Virtualization Host Performs Better

[J65nko]

From https://it-notes.dragas.net/2024/06/...er/#conclusion:

Regarding RAM and CPU, the performance of the VMs is comparable. There are slight differences in favor of Proxmox for CPU and FreeBSD for RAM, but in my opinion, these differences are so negligible that they wouldn’t sway the decision towards one solution or the other.

The I/O performance data clearly indicates that VM on FreeBSD with NVMe and ZFS outperforms all other configurations by a significant margin. This is evident in the file creation speed, read/write operations per second, fsync operations per second, throughput, and latency metrics. However, the exceptionally high performance of VM on FreeBSD with NVMe and ZFS suggests that there might be an underlying issue, such as the NVMe driver not honoring fsync properly. This could lead to the VM believing that data has been written when it has not, resulting in artificially inflated performance results.