RFC: Hiding per-CPU kernel output behind bootverbose

[Steven Hartland]

Sounds good to me, I think we could actually benefit from even quieter
modes if I’m honest.

On Thu, 19 Apr 2018 at 21:09, Colin Percival <cperciva at tarsnap.com> wrote:

> On large systems (e.g., EC2's x1e.32xlarge instance type, with 128 vCPUs)
> the boot time console output contains a large number of lines of the forms
>
> SMP: AP CPU #N Launched!
> cpuN: <ACPI CPU> on acpi0
> estN: <Enhanced SpeedStep Frequency Control> on cpuN
>
> Having 128 almost-identical lines of output doesn't seem very useful, and
> it actually has a nontrivial impact on the time spent booting.
>
> Does anyone mind if I hide these by default, having them only show up if
> boot verbosity is requested?
>
> --
> Colin Percival
> Security Officer Emeritus, FreeBSD | The power to serve
> Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid
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