Re: kern/56291: XEN3_DOM0 nvme abysmal performance - very slow boot

[Joerg Sonnenberger <joerg%bec.de@localhost>]

On Thu, Jul 01, 2021 at 05:20:00PM +0000, kardel%netbsd.org@localhost wrote:
> >Description:
> 	On a Dell R740 9.99.85 GENERIC boots normally and can access ld0@nvme0.
> 	The XEN3_DOM0 kernel under XEN 4.15 boots very slowly when nvme is enabled.
> 	Disabling nvme allows the kernel to boot normally.
> 	A similar issue was observed in PR kern/55667 initially before the
> 	hypervisor problems started there.

Can you check if you are running into interrupt storms?

Joerg