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

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

The following reply was made to PR kern/56291; it has been noted by GNATS.

From: Joerg Sonnenberger <joerg%bec.de@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
	netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/56291: XEN3_DOM0 nvme abysmal performance - very slow boot
Date: Fri, 2 Jul 2021 01:47:52 +0200

 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