Paul Wilde :blobcatnim: :dontpanic_nobg:

@stefano Thanks,

I've recently moved some of my VMs from KVM to bhyve and have noticed a significant performance improvement.
Most noticeably with Nextcloud (Debian guest) where it feels really quick and snappy now where it felt clunky before. I guess this may be due to improved IO performance similar to what you have tested.

Like 10 June at 7:48 | Wall-to-wall | Open on notnull.space

4 comments

Benjamin Kwiecień 🇵🇸

@paul @stefano bhyve sounds great

10 June at 10:09 | Open on kwiecien.us

Paul Wilde :blobcatnim: :dontpanic_nobg:

@ben to be fair it's probably ZFS doing a lot of the heavy lifting here, but @stefano 's testing has shown that even on ZFS on proxmox (KVM) the performance still isn't quite as good as ZFS on FreeBSD (bhyve) - which is likely due to the ZFS modules in FreeBSD being native over additional kernel modules in proxmox (or any other Linux distro that can use it)

bhyve is definitely worth looking into if you use VMs though, for sure!

10 June at 10:17 | Open on notnull.space

Phil Dennis-Jordan 😷

@paul @ben @stefano I don’t know, I could equally imagine the Qemu I/O paths not being ideal. Qemu is a beast of a code base, which even after years of effort hasn’t managed to get close to eliminating the big Qemu lock (BQL) for example; bhyve is tiny in comparison.

10 June at 14:52 | Open on mstdn.social

Stefano Marinelli

@paul Exactly the reason why I decided to perform those tests. Moving VMs to bhyve led people to think I've upgraded the hardware as they're "quicker". Glad to know you're having the same experience!

10 June at 10:11 | Open on mastodon.bsd.cafe