Re: [2.6 patch] let LOG_BUF_SHIFT default to 17

Randy Dunlap
2008-01-28T22:38:32Z

On Tue, 29 Jan 2008 00:12:23 +0200 Adrian Bunk wrote:

> 16 kB is often no longer enough for a normal boot of an UP system.

s/16/64/ then agreed.

Acked-by: Randy Dunlap <randy.dunlap@oracle.com>

> And even less when people e.g. use suspend.
>
> 17 seems to be a more reasonable default for current kernels on current
> hardware (it's just the default, anyone who is memory limited can
> still lower it).
>
> Signed-off-by: Adrian Bunk <bunk@kernel.org>
>
> ---
> f02213e3c1cb90ec1c66227f037110d489f30bfd
> diff --git a/init/Kconfig b/init/Kconfig
> index 0eda68f..81a1255 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -272,17 +272,14 @@ config IKCONFIG_PROC
> config LOG_BUF_SHIFT
> int "Kernel log buffer size (16 => 64KB, 17 => 128KB)"
> range 12 21
> - default 17 if S390 || LOCKDEP
> - default 16 if X86_NUMAQ || IA64
> - default 15 if SMP
> - default 14
> + default 17
> help
> Select kernel log buffer size as a power of 2.
> - Defaults and Examples:
> - 17 => 128 KB for S/390
> - 16 => 64 KB for x86 NUMAQ or IA-64
> - 15 => 32 KB for SMP
> - 14 => 16 KB for uniprocessor
> + Examples:
> + 17 => 128 KB
> + 16 => 64 KB
> + 15 => 32 KB
> + 14 => 16 KB
> 13 => 8 KB
> 12 => 4 KB
>
>
> --
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---
~Randy