Ubuntu
acpi-support package

  1. Bug #59695
  2. Comment #160

Comment 160 for bug 59695

Revision history for this message
Bart Samwel (bart-samwel) wrote : Re: [Bug 59695] Re: default value in power.sh potentially kills laptop disks

I didn't see atime mentioned on the wiki page. Logging in fails for me
right now (takes forever), so perhaps somebody else could add this info:

If you're looking for something that definitely does cause disk activity
every 30 seconds, it's atime updates. When enabled (which they are by
default), access times are updated for all file system _reads_ (even
from the file system cache), and they are flushed very soon after (30
seconds AFAIK).

If the problem really is that something is accessing the disk very
often, atime is at least one of the most likely culprits. Mounting all
filesystems noatime (or at least relatime) could make a big difference.

Brian Visel wrote:
> I'm 99% sure that the problem lies not (so much) in the aggressive APM,
> but in the combination of the aggressive APM and some spurious constant
> disk activity. If the disk activity weren't there, it wouldn't be so
> much of an issue, and if the APM weren't so aggressive, it wouldn't be
> so much of an issue. I'll notate this on the wiki.