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Date:      Wed, 20 Oct 2004 11:39:53 -0600
From:      Scott Long <scottl@freebsd.org>
To:        Brooks Davis <brooks@one-eyed-alien.net>
Cc:        arch@freebsd.org
Subject:   Re: [Fwd: What do people think about not installing a stripped /kernel ?]
Message-ID:  <4176A2E9.2010801@freebsd.org>
In-Reply-To: <20041020172955.GG11477@odin.ac.hmc.edu>
References:  <41767CF1.2020005@FreeBSD.org> <20041020165900.GB834@alex.lan> <41769E70.4020808@FreeBSD.org> <20041020172955.GG11477@odin.ac.hmc.edu>

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Brooks Davis wrote:
> On Wed, Oct 20, 2004 at 08:20:48PM +0300, Maxim Sobolev wrote:
> 
>>Let me clarify it down: it is only applies to HEAD, that is, unstable 
>>branch, which can be inheretedly buggy. STABLE/RELEASE doesn't really 
>>need this feature. This dismisses the following objections:
> 
> 
> I think it's more important in HEAD, but personally I would like to ship
> this way.  It has the potential to vastly improve the quality of bug
> reports.  That's not my call though.
> 
> 
>>1. HDD size constrains: nobody really want to run unpatched HEAD on CF 
>>or the like, since with HEAD you are expected to re-compile more than often.
>>
>>2. / partition size: anybody running HEAD is expected to allow this 
>>accomodate debugging kernel.
>>
>>3. Additional slowdown: since it is adds up to 10 seconds (I bet that 
>>even less on a modern system) who cares? This is HEAD, so that it is 
>>expected to be sub-optimal performance-wise.
> 
> 
> I seriously doubt it's measurable.  If it is, the loader is broken. :-)
> We're talking about reading a section header and doing a seek for each
> ELF section we don't care about (all the ones that bloat the file
> relative to the stripped version.)
> 
> -- Brooks

Actually, another possbility would be to have the kernel install target
install the stripped kernel into /boot/kernel/kernel and the debug
kernel into /var/kernel/kernel.debug or some similar location.

Scott



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