Load_Cycle_Count and ATA APM

Vince Hoffman jhary at unsane.co.uk
Tue Feb 5 13:29:45 UTC 2008


Kostik Belousov wrote:
> 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.
> 
/usr/ports/sysutils/ataidle  exists and is usable, (I use it on my
laptop.) However it seems it could be a sensible thing to have in
atacontrol.

Vince

> Any comments or objections against committing this ?
> http://people.freebsd.org/~kib/misc/ata_setcap.1.patch



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