Slow boot on rocky linux 10 latest kernel
-
I'm not familiar with the Rocky 10 kernel internals, but a
spinlockstorm on a vCPU during boot often comes from how the guest kernel handles its paravirtual clock/timer with the host, rather than anything Rocky-specific.
Could you share your XCP-ng version, and whether an older RL10 kernel (or an RL9 one) boots normally on the same VM? That would tell us if it's genuinely the latest kernel that regressed.
If it only happens on that kernel and it's hard to test elsewhere, a mention to @Team-Hypervisor-Kernel might help, since they can check whether it reproduces on their side. -
@poddingue FWIW I've seen the same on FC44 as well, but I don't yet know where it came from.
-
Can reproduce on Fedora 44 and Alpine Linux (6.18.22-0-virt).
But doesn't occur on Debian 13 (6.12). -
-
@acebmxer which kernel version you have in your Debian guest (uname -a) ?
-
This is on fresh install Debian 13 deployed from XO Hub - 6.12.38+deb13-amd64. I do not see this behavior on Ubuntu.
after update 6.12.90+deb13.1-amd64
still happens.
-
@acebmxer I don't observe the same issue on Debian 13 Cloud-Init (both 6.12.38+deb13-amd64 and updated 6.12.90+deb13.1-amd64).
Though it still takes some time to boot (especially at loading the ramdisk) but it's not related to this pv spinlock issue and mostly a "BIOS guest" related issue.
But I'm testing on a Intel machine. -
Hello,
To gave more details abouit my case:
- XCPNG: 8.3.0
- CPU:
AMD EPYC 4464P 12-Core Processor - Kernel:
6.12.0-211.18.1.el10_2.x86_64
-
I was going to suggest it might be a amd issue. I can try later on work host that are intel.
-
@TeddyAstie These spinlock events that cause slow boot also happen on my Debian VMs. Also AMD Epyc CPU in my case.
I noticed that this only happens for UEFI enabled VMs. VMs booting in BIOS mode do not have this issue.
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better 💗
Register Login