Load_Cycle_Count and ATA APM

Kostik Belousov kostikbel at gmail.com
Wed Feb 6 17:12:23 UTC 2008


On Wed, Feb 06, 2008 at 08:22:32AM +0100, Alexander Leidinger wrote:
> Quoting Kostik Belousov <kostikbel at gmail.com> (from Tue, 5 Feb 2008  
> 22:38:27 +0200):
> 
> >[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
> 
> Yeah, fast. :)
> 
> Whitespace error for the comment in the line of the ATA_SF_DIS_AAC define?

It seems that the patch goes to the waste-basket, so whitespace problems are
leaved as is. ATA code uses its own formatting conventions anyway.
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