Date: Thu, 19 Aug 2004 20:25:26 +0200 From: Andre Oppermann <andre@freebsd.org> To: Peter Jeremy <PeterJeremy@optushome.com.au> Cc: Mike Tancsa <mike@sentex.net> Subject: Re: Weird performances: -CURRENT vs 5.2.1 Message-ID: <4124F096.2050907@freebsd.org> In-Reply-To: <20040819090814.GM423@cirb503493.alcatel.com.au> References: <20040818200530.GA88370@abigail.blackend.org> <20040818205029.GA48028@xor.obsecurity.org> <6.1.2.0.0.20040818170232.05773880@64.7.153.2> <20040819072614.GA19508@abigail.blackend.org> <20040819090814.GM423@cirb503493.alcatel.com.au>
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Peter Jeremy wrote:
> On Thu, 2004-Aug-19 09:26:14 +0200, Marc Fonvieille wrote:
>
>>It's not really documented. To sum up, you have to remove these lines
>
>>from your kernel configuration file:
>
>>makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
>>
>># Debugging for use in -current
>>options KDB # Enable kernel debugger support.
>>options DDB # Support DDB.
>>options GDB # Support remote GDB.
>
> The above lines have no measurable runtime performance impact. Removing
> them just makes it far more difficult to debug any problems.
I fully agree with two expections:
1. "options GDB" should not be included by default because it opens a nasty
security hole via firewire and if someone has easy access to the serial
ports.
2. Unattended should be compiled in. Thus the box panics and gives a traceback
but will reboot after 15 seconds.
--
Andre
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