Date: Thu, 19 Apr 2018 18:06:21 +0000 From: Colin Percival <cperciva@tarsnap.com> To: freebsd-hackers@freebsd.org Subject: RFC: Hiding per-CPU kernel output behind bootverbose Message-ID: <01000162df15f856-1e5d2641-2a72-4250-8d8e-adcd47bc5db4-000000@email.amazonses.com>
next in thread | raw e-mail | index | archive | help
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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?01000162df15f856-1e5d2641-2a72-4250-8d8e-adcd47bc5db4-000000>