[laptop-mode] Enabling Laptop Mode Activate Pdflush Every 3-4 Seconds

[Ritesh Raj Sarraf]

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On Tuesday 26 May 2009 15:24:27 Casey McGinty wrote:
> I'm hoping someone has a solution to this issue. I have a set of RAID
> arrays that are not part of my root file system. Normally they are
> inactive. However, when I ENABLE laptop-mode on my system, the drives are
> written to every couple of seconds by pdflush. I am on Ubuntu 9.04 on a
> desktop system. Here is my laptop-mode.conf file:

Can you investigate to see which process is really triggering the write ?
AFAIK, the default behavior on ext3 filesystems is to trigger a sync every =
5=20
seconds.
With laptop-mode enabled this increases. A sync will only be triggered if=20
there are enough dirty buffers to be written.

Ritesh
=2D-=20
Ritesh Raj Sarraf
RESEARCHUT - http://www.researchut.com
"Necessity is the mother of invention."


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