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From: John Baldwin <jhb@freebsd.org>
To: freebsd-stable@freebsd.org,
 prabhpal@digital-infotech.net
Subject: Re: Failed to attach P_CNT - FreeBSD 9.1 RC3
Date: Sat, 19 Jan 2013 07:26:16 -0500
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On Sunday, November 04, 2012 05:56:33 AM Shiv. Nath wrote:
> Dear FreeBSD Community Friends,
> 
> It is FreeBSD 9.1 RC3, i get the following warning in the message log
> file. i need assistance to understand the meaning of this error, how
> serious is it?
> 
> acpi_throttle23: failed to attach P_CNT

On newer CPUs that use est you don't want to use acpi_throttle anyway so you 
can ignore the errors.  (est gives you power savings when it lowers your CPU 
speed, acpi_throttle generally does not, it only helps with lowering the 
temperature)

-- 
John Baldwin