[kwlug-disc] Server reboot time ...

[Anton Avramov]

Hi,
You should also check dmesg --ctime to see it there may be some more
information than the journalog. 

I suspect however this time is spend in bios doing something and you
would need a monitor to actually see this is it doing. 

Good luck

On Mon, 2025-10-06 at 13:29 -0400, Khalid Baheyeldin wrote:
> I am setting up a new Dell server for a client, so we can move the
> site to it.
> 
> But I am bothered by the time it takes from shutdown to boot.
> It will not be a frequent event, but when it is happening, the site
> is down.
> So minimizing it is important ... 
> 
> Here is the logs from journalctl:
> 
> Oct 06 16:27:48 foo systemd[1]: Reached target shutdown.target -
> System Shutdown.
> Oct 06 16:27:48 foo systemd[1]: Reached target final.target - Late
> Shutdown Services.
> Oct 06 16:27:48 foo systemd[1]: systemd-reboot.service: Deactivated
> successfully.
> Oct 06 16:27:48 foo systemd[1]: Finished systemd-reboot.service -
> System Reboot.
> Oct 06 16:27:48 foo systemd[1]: Reached target reboot.target - System
> Reboot.
> Oct 06 16:27:48 foo systemd[1]: Shutting down.
> Oct 06 16:27:48 foo systemd-shutdown[1]: Syncing filesystems and
> block devices.
> Oct 06 16:27:48 foo systemd-shutdown[1]: Sending SIGTERM to remaining
> processes...
> Oct 06 16:27:48 foo systemd-journald[1694]: Journal stopped
> 
> -- Boot 67974696049a495c86f01b56d2a150dd --
> 
> Oct 06 16:32:09 foo kernel: Linux version 6.8.0-85-generic (...)
> (x86_64-linux-gnu-gcc-13 ...
> Oct 06 16:32:09 foo kernel: Command line: BOOT_IMAGE=/vmlinuz-6.8.0-
> 85-generic root=UUID=foo ro
> Oct 06 16:32:09 foo kernel: KERNEL supported cpus:
> Oct 06 16:32:09 foo kernel:   Intel GenuineIntel
> Oct 06 16:32:09 foo kernel:   AMD AuthenticAMD
> ...
> Oct 06 16:32:09 foo kernel: BIOS-provided physical RAM map:
> 
> You can see it takes a full 4 minutes and 20 seconds to do ...
> nothing?
> 
> Any ideas why it takes that long, or where to look?
> 
> -- 
> Khalid M. Baheyeldin
> _______________________________________________
> kwlug-disc mailing list
> To unsubscribe, send an email to kwlug-disc-leave at kwlug.org
> with the subject "unsubscribe", or email
> kwlug-disc-owner at kwlug.org to contact a human being.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.kwlug.org/pipermail/kwlug-disc_kwlug.org/attachments/20251006/9c54351a/attachment-0001.htm>