From owner-freebsd-questions  Tue Apr  6 11: 1:38 1999
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From: Archie Cobbs <archie@whistle.com>
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Subject: Re: Debug kernel by default (was: System size with -g)
In-Reply-To: <6C37EE640B78D2118D2F00A0C90FCB441A5FF9@site2s1> from Christopher Michaels at "Apr 6, 99 09:59:13 am"
To: ChrisMic@clientlogic.com (Christopher Michaels)
Date: Tue, 6 Apr 1999 10:57:37 -0700 (PDT)
Cc: grog@lemis.com, gjb@comkey.com.au, questions@FreeBSD.ORG,
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Christopher Michaels writes:
> Maybe I'm a little out of the loop, but as a general user I feel I should
> voice my opinions (questions).
> 
> I understand the up-sides of a debug kernel (although I wouldn't mind some
> clarification), but what are the down sides?
>  - The kernel is larger, correct?  Is this just file size or does it take up
> significantly more memory as well?

You would install two kernels: /kernel and /kernel.debug. The first
one is a normal kernel (but no debugging info) and this is the one
you run. So no more memory is used (except on your disk). The second
you only need as a debug reference for the first when you get a core dump.

>  - Does a debug kernel impart any performance hit?

No... the same code is being executed as before.

-Archie

___________________________________________________________________________
Archie Cobbs   *   Whistle Communications, Inc.  *   http://www.whistle.com


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