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Date: Thu, 23 Sep 2010 17:35:40 +0300
From: Andriy Gapon <avg@icyb.net.ua>
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To: "Daniel O'Connor" <doconnor@gsoft.com.au>
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Cc: Alexander Motin <mav@freebsd.org>,
	FreeBSD Stable <freebsd-stable@freebsd.org>
Subject: Re: SuperMicro i7 (UP) - very slow performance
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on 23/09/2010 15:37 Daniel O'Connor said the following:
> 
> On 23/09/2010, at 21:26, Andriy Gapon wrote:
>> on 23/09/2010 11:26 Alexander Motin said the following:
>>> PS: AFAIK dev.cpu.0.freq won't report you if frequency was lowered due
>>> to overheating.
>>
>> I think that you are correct about this.
>> And last I checked we simply ignored thermal throttling interrupt.
> 
> I could not get cpufreq to show a lower frequency when I tried overheating a CPU even though the performance dropped.
> 
> It would be really nice if there was some notification of CPU throttling :)

cpufreq is not designed to monitor what is going on in cpu.
cpufreq knows what cpu supports and knows host to set a certain frequency
(performance level rather).


-- 
Andriy Gapon