Date: Mon, 23 Jun 2008 14:37:31 -0500
From: Derek Ragona <derek@computinginnovations.com>
To: josh.carroll@gmail.com
Cc: hartzell@alerce.com, freebsd-questions@freebsd.org
Subject: Re: {Spam?} Re: CPU temp's on core 2 duo, should they be significantly different?
Message-ID: <6.0.0.22.2.20080623143415.0255c5b8@mail.computinginnovations.com>
In-Reply-To: <8cb6106e0806231224vd72b4e6v8470577867c63031@mail.gmail.com >
References: <18527.62508.451095.415706@almost.alerce.com> <6.0.0.22.2.20080623141819.02568dd0@mail.computinginnovations.com> <8cb6106e0806231224vd72b4e6v8470577867c63031@mail.gmail.com>
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At 02:24 PM 6/23/2008, Josh Carroll wrote:
> > Not sure if the core duos work the same as older 2 CPU and 4 CPU
> > motherboards, but there are some BIOS functions that always use the first
> > CPU. So you never get true SMP because the hardware uses the first CPU
> more
> > to service interrupts.
>
>True, but interrupt handling and minimal background processing should
>not cause a core to be 15 C hotter. I guess the original poster can
>mention the load on both cores (or post a top snapshot) so we can see
>if there is some load on the system.
It can cause it to be hotter because the first CPU is servicing all
motherboard hardware like the ethernet, video, etc. It is usually the
ethernet that causes the most cpu activity.
-Derek
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