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Date:      Thu, 23 Mar 2006 18:36:54 +0000
From:      Alex Zbyslaw <xfb52@dial.pipex.com>
To:        Yuri Lukin <freebsd@swaggi.com>
Cc:        freebsd-hardware@freebsd.org
Subject:   Re: FreeBSD shutting down unexpectedly
Message-ID:  <4422EAC6.2070002@dial.pipex.com>
In-Reply-To: <1143132394.16617@swaggi.com>
References:  <1143132394.16617@swaggi.com>

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Yuri Lukin wrote:

>I am still however a bit confused as to what mbmon is outputting for me. This
>is what I am currently seeing:
>
>Temp.= 30.8, 28.6, 22.0; Rot.= 5818, 5113,    0
>Vcore = 1.50, 1.50; Volt. = 3.35, 3.27,  7.93,   0.00,  0.00
>
>I am assuming that 30.8 is the Tcpu of cpu1. But which one is the Tcpu of cpu2?
>Here's the chipset mbmon is using to probe the values:
>  
>
I believe the 1st temp is MB, the 2nd CPU1, the third CPU2.  One way to 
figure out is to run something CPU intensive on only one CPU and watch 
which temp rises.  A huge gzip would do the trick.  The MB temp 
shouldn't change that much, but CPU should go up noticably.

>I read the doc for mbmon but still couldn't really understand it. Do I need
>to recompile the kernel with SMP in order for mbmon to read the values from
>the second CPU? I didn't think that would be necessary. By the way, before anyone
>asks, I do plan to compile SMP in the near future to utilize the second processor. 
>  
>
I believe the monitoring chips are completely independent of SMP.  The 
monitoring chip has no clue whether the OS is using the CPU or not, it 
just records its temp.

--Alex

PS I hope mbmon has those voltages all wrong, as 3.27 and 7.93 are 
nowhere near 5v or 12v!  (There's also healthd in the ports, but my 
(limited) experience is that it doesn't always get voltages right either).




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