Date: Tue, 6 Apr 1999 11:11:08 -0700 (PDT) From: Julian Elischer <julian@whistle.com> To: Archie Cobbs <archie@whistle.com> Cc: Christopher Michaels <ChrisMic@clientlogic.com>, grog@lemis.com, gjb@comkey.com.au, questions@FreeBSD.ORG, hackers@FreeBSD.ORG Subject: Re: Debug kernel by default (was: System size with -g) Message-ID: <Pine.BSF.3.95.990406110942.759B-100000@current1.whistle.com> In-Reply-To: <199904061757.KAA73737@bubba.whistle.com>
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The down side is that you really need 32MB to compile a debug kernel in timescales measurable by humans, and you need an extra 20MB or so of disk per kernel compile directory. julian On Tue, 6 Apr 1999, Archie Cobbs wrote: > 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 > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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