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Re: pm-utils for F8 and Advanced power management





2008/7/8 Till Maas <opensource till name>:
On Tuesday 08 July 2008 18:44:17 Callum Lerwick wrote:

> Vendor Specific SMART Attributes with Thresholds:
> ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE
> UPDATED  WHEN_FAILED RAW_VALUE

> 193 Load_Cycle_Count        0x0032   065   065   000    Old_age
> Always       -       406672

> F-cking great. I don't think this drive is even a year old, and it's
> up to 400000 already! And has reallocated sectors? This is a plain,

Are you sure that you know what the value means? My drive reports this:

193 Load_Cycle_Count        0x0032   071   071   000    Old_age
Always       -       2990488599305

I do not believe that the value is exactly the number of load cycles that my
drive already had.


My laptop is less than a month old, and it is running F8.

  5 Reallocated_Sector_Ct   0x0033   100   100   024    Pre-fail  Always       -       8589934592000
  9 Power_On_Minutes        0x0032   100   100   000    Old_age   Always       -       167h+02m
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       89
191 G-Sense_Error_Rate      0x0012   100   100   000    Old_age   Always       -       2
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       7
193 Load_Cycle_Count        0x0032   100   100   000    Old_age   Always       -       5325

The number of reallocated sectors is 000 (forget the high order bits for fujtisu).
The load cycle 5325. This number is correct. When I started to use hdparm in rc.local and in /usr/lib/pm-utils/sleep.d/ (the parameter is lost when returning from hibernation
and suspend mode), it just increments a single unit every time I shut down or suspend.
This is the way it should be in my opinion.


According to this post

http://www.theinquirer.net/gb/inquirer/news/2007/10/31/ubuntu-eats-lappy-hard-drive

(look at the end) the reason is that ext3 commits each 5 seconds, awaking the disk.


--
Paulo Roma Cavalcanti
LCG - UFRJ
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