https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=298245
Bug ID: 298245
Summary: `shutdown -h now' use 100% CPU time
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
I accidentally typed `shutdown -h now' on my VPS at hetzner. The server went
down, logged me out of the remote terminal. On the hetzner web console the
kernel waited for a key press. I looked at the hetzner graph console and it
shows that the CPU load goes up to 100% (one CPU on full speed). Apparently,
the kernel does busy waiting for a key press.
I can repeat this on amd64 and arm on hetzner, and also in Virtual Box on my
home computer.
I don't see this problem with debian13.
I know that I should use `shutdown -p now' instead. But the point is: we shall
not heat up the planet with busy waiting. In a VPS setup it can easily happen
that you forgot to press the off/reboot button.
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