FreeBSD 13.0 terrible performance in KVM

Sun Apr 25 12:57:20 UTC 2021

> Am 24.04.2021 um 15:03 schrieb Jeff Love <jl at burgh.net>:
> 
> I'm running 12.2 and 13.0 on KVM using virtio and zfs. I am not having disk I/O issues.

UFS or ZFS does not make a difference for me.

ZFS is faster on read due to compression - that’s why back in the XenServer days I didn’t even realize it until somebody complained.

It’s just a tad laggy in idle or normal conditions, but any kind of IO brings the system down to a crawl - and that is noticeable.