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Date:      Fri, 17 Jun 2005 06:59:45 -0500
From:      Eric Anderson <anderson@centtech.com>
To:        Robert Watson <rwatson@FreeBSD.org>
Cc:        freebsd-current@FreeBSD.org
Subject:   Re: Reboot while booting with new per-CPU allocator
Message-ID:  <42B2BB31.7000809@centtech.com>
In-Reply-To: <20050617123954.W56734@fledge.watson.org>
References:  <42B18536.3080200@videotron.ca> <20050616151502.X27625@fledge.watson.org> <42B192D2.7000505@videotron.ca> <20050616181820.E27625@fledge.watson.org> <42B1B784.8010405@videotron.ca> <20050616184127.L27625@fledge.watson.org> <20050617110902.C56734@fledge.watson.org> <42B2B4C0.1030504@centtech.com> <20050617123954.W56734@fledge.watson.org>

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Robert Watson wrote:
> 
> On Fri, 17 Jun 2005, Eric Anderson wrote:
> 
>>> Interestingly, there's been a bunch of reports of this in the past 
>>> few days, and there weren't immediately after the malloc commit.  I 
>>> wonder if some other recent change has increased the amount of UMA 
>>> memory allocated early in the boot, increasing the level of reports...
>>
>>
>>  Increase UMA_BOOT_PAGES to prevent a crash during initialization.  See
>>  http://docs.FreeBSD.org/cgi/mid.cgi?42AD8270.8060906 for a detailed
>>  description of the crash.
> 
> 
> Yeah, this is the fix, but I guess I'm wondering what caused a recent 
> spate of problem reports -- was it a delayed response to the malloc 
> change as people gradually upgraded, or some other recent kernel change 
> that caused increase demand for memory.

For me, it was the recent lack of apathy - finally getting around to 
trying some combos for suspending my laptop, I noticed that having 
apic+smp in my kernel made me crash on boot.

Maybe it's some of the modules that have changed - the ones that caused 
the problems for me were:

snd_pcm
snd_ich
sound
vkbd

If those weren't loaded via loader.conf, I was fine.  Maybe the change 
is inside one of those.

As I've said before, I'm no coder, so take all that with a grain of salt 
- but hopefully it's helpful to someone.

Eric



-- 
------------------------------------------------------------------------
Eric Anderson        Sr. Systems Administrator        Centaur Technology
A lost ounce of gold may be found, a lost moment of time never.
------------------------------------------------------------------------



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