Re: [Fwd: What do people think about not installing a stripped /kernel ?]

From: Brooks Davis (brooks_at_one-eyed-alien.net)
Date: 10/20/04

  • Next message: Maxim Sobolev: "Re: [Fwd: What do people think about not installing a stripped /kernel ?]" 
    Date: Wed, 20 Oct 2004 14:37:20 -0700
To: Scott Long <scottl@freebsd.org>

    On Wed, Oct 20, 2004 at 11:39:53AM -0600, Scott Long wrote:
    > 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.)
    >
    > 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.

    Some place in var seems like a good place to me. We may want to bump
    our default /var size a bit based on this but that's a minor detail.
    The nice thing about /var/crash would be that everything you need to
    debug a crash dump would be under a single hierarchy.

    -- Brooks 

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