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Date:      Wed, 07 Jan 2004 22:43:04 -0800
From:      Yu-Shun Wang <yushunwa@ISI.EDU>
To:        Alan Cox <alc@cs.rice.edu>
Cc:        current@freebsd.org
Subject:   Re: Immediate reboot after memory probe
Message-ID:  <3FFCFBF8.3050502@isi.edu>
In-Reply-To: <20040108053827.GJ7891@cs.rice.edu>
References:  <200312220101.hBM11WgL071526@repoman.freebsd.org> <3FFCA854.7040707@isi.edu> <20040108053827.GJ7891@cs.rice.edu>
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[-- Attachment #1 --]
Hi,

Thanks for the reply. Some more questions inline ...

Alan Cox wrote:
> On Wed, Jan 07, 2004 at 04:46:12PM -0800, Yu-Shun Wang wrote:
> 
>>...
>>With a bit of digging and luck (not debugging, I am new to
>>kernel debugging and don't have the environment setup to
>>generate tracebacks), I managed to find the probable cause:
>>sys/i386/i386/pmap.c from the commit log included below.
>>After reversed the diff between 1.456 and 1.457, the problem
>>was fixed.

> Please restore this diff and try increasing UMA_BOOT_PAGES.  Don't be
> overly conservative; try doubling UMA_BOOT_PAGES.

Will do. The PCs are in my office, so will have to wait
till tomorrow.

Just to clarify, you meant changing the value directly
in sys/vm/uma_int.h, or is it something I can set as
some tunables or hints?

>>Weird thing is, it seems like I am the only one hit by
>>this problem. I couldn't find any message on CURRENT
>>list regarding this. Anyways, dmesg & kernel conf files are
>>also attached. Please let me know if you need more info.

> I suspect it is related to the number of modules that you loading.

Hmm, now that you mentioned, it's a bit much. The previous
sys admin (just graduated & left) set those up, they are now
under my care. :-)
AFAIK, we've been running with these modules and tracking
current for quite a while without this problem. I am
wondering what changed; or maybe we've been close to
the edage and were just lucky? Is there a way to find out?

Thanks again, I'll let you know if it works.

yushun.

> Regards,
> Alan

-- 
Yu-Shun Wang <yushunwa@isi.edu>
USC Information Sciences Institute

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