amd64/127484: [timecounters] Drift problem with FreeBSD 7.0 and 7.1 PRERELEASE

Alexander Motin mav at FreeBSD.org
Mon Jul 12 07:20:05 UTC 2010


The following reply was made to PR amd64/127484; it has been noted by GNATS.

From: Alexander Motin <mav at FreeBSD.org>
To: bug-followup at FreeBSD.org, tg.at.swox.com at FreeBSD.org
Cc:  
Subject: Re: amd64/127484: [timecounters] Drift problem with FreeBSD 7.0 and
 7.1 PRERELEASE
Date: Mon, 12 Jul 2010 10:11:37 +0300

 On some AMD chipsets enabling Spread Spectrum makes HPET to run few
 percents slower then reported by hardware. It is official chipset errata
 and it should be handled by BIOS SMI code.
 
 -- 
 Alexander Motin


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