linux-kernel - Re: [2.6 patch] let LOG_BUF

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Message-ID: <20080129073607.GO8767@does.not.exist>
Date:	Tue, 29 Jan 2008 09:36:07 +0200
From:	Adrian Bunk <bunk@...nel.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [2.6 patch] let LOG_BUF_SHIFT default to 17

On Tue, Jan 29, 2008 at 07:35:00AM +0100, Andi Kleen wrote:
> Adrian Bunk <bunk@...nel.org> writes:
> 
> > 16 kB is often no longer enough for a normal boot of an UP system.
> 
> Better would be to just disable by default/remove noisy messages
> to make the kernel boot output shorter.
> 
> I think we got a lot of IMHO useless messages in there.

Nearly 25% of the messages in my dmesg come from ACPI.

Plus many other messages that cover these generic resources stuff (e.g. 
BIOS map or ioport/iomem reservations).

All of these tend to be of great help when debugging driver regressions, 
since diff'ing the dmesg's often is enough for determining whether it's 
a driver problem or a PCI/ACPI/whatever problem.

> -Andi

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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