Comment on Over engineering my homelab so I don't pay cloud providers
F04118F@feddit.nl 3 days agoI’m not actually sure because I haven’t measured it. But I’ve read that while CPU and memory overhead is small, disk IO is much faster without virtualization.
MangoPenguin@lemmy.blahaj.zone 3 days ago
It could be depending on the underlying filesystem and how it’s set up, I’ve run into that before.
But my self hosted stuff doesn’t need particularly fast disk IO, so I don’t really notice even if there is a bottleneck lol
MotoAsh@lemmy.world 3 days ago
It definitely depends. If you use qcow2 files for your disks, they’re a copy-on-write format, which is slower than most file systems inherently. If the host system is also a copy-on-write file system, then it doubles your IO again.
If you’re using raw disks/partitions, there is minimal overhead that usually comes down to usually miniscule driver differences.
MangoPenguin@lemmy.blahaj.zone 3 days ago
Yeah I’m running ZFS with raw disks, and most things are in containers anyways, just a few VMs for Windows or stuff that doesn’t like containers.