Load_Cycle_Count and ATA APM

Bruce Cran bruce at cran.org.uk
Tue Feb 5 21:07:04 UTC 2008

Kostik Belousov wrote:
> [Replying to the original list of the recipients].
> On Tue, Feb 05, 2008 at 05:36:57PM +0100, Alexander Leidinger wrote:
>> Quoting Kostik Belousov <kostikbel at gmail.com> (from Tue, 5 Feb 2008  
>> 15:02:10 +0200):
>>> I noted that when idle, my laptop HDD increases the Load_Cycle_Count
>>> (193) approx. each ten seconds, as reported by smartctl. Have recently
>>> read about the Ubuntu and APM mode for hard drives, I searched for the
>>> tool to tune APM (that has functionality similar to linux' hdparm -B).
>>> It seems that FreeBSD does not have a tool ? Am I wrong ? In case I did
>>> not make a mistake, below is the patch that allows to manage APM state
>>> of the hard drive using atacontrol.
>> Any chance to also handle automatic acoustic management at the same time?
> http://people.freebsd.org/~kib/misc/ata_setcap.2.patch

The PR bin/81692 also has a patch to add APM and AAM functionality to 
atacontrol on FreeBSD 6.


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