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Date: Thu, 08 Apr 2010 10:24:44 +0300
From: Andriy Gapon <avg@icyb.net.ua>
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To: Attilio Rao <attilio@freebsd.org>
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Cc: Akephalos <akephalos.akephalos@gmail.com>, freebsd-stable@freebsd.org,
	Ed Maste <emaste@sandvine.com>
Subject: Re: CPU problems after 8.0-STABLE update
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on 08/04/2010 10:22 Attilio Rao said the following:
> 2010/4/8 Andriy Gapon <avg@icyb.net.ua>:
>> on 08/04/2010 04:29 Akephalos said the following:
>>> Attilio, I csup-dated several hours ago and rebuilt and installed the kernel
>>> (and world, in case it matters).
>>>
>>> %uname -a FreeBSD free.bsd369441.org 8.0-STABLE FreeBSD 8.0-STABLE #0: Thu
>>> Apr  8 03:01:13 EEST 2010
>>> root@free.bsd369441.org:/usr/obj/usr/src/sys/GENERIC  amd64
>>>
>>> The problem persists without the machdep trick, I see only one processor in
>>> top with 0.0% CPU load.
>>>
>> Interesting, I couldn't see anything obviously wrong about your hardware.
>> Could you please post a verbose dmesg from a problematic boot somewhere?
>> Also, output of 'vmstat -i' and Interrupt request lines portion of 'devinfo -u'
>> output.
>> Thanks!
> 
> I watched again the patch I committed to STABLE_8 and I can't find
> anything wrong with it.
> Also the fact that the setting machdep.lapic_all=1 fixes this means
> that this may be an atrtc working problem.
> Maybe new atom machine expose a problem with it?

This doesn't look like an atom machine :-)
A mobile AMD rather.

> I'm thinking if we might switch this into an opt-in rather than an
> opt-out feature.

What's strange is that there is no diagnostics from RTC.

-- 
Andriy Gapon