[ltp] Some questions on the T21

[Tino Keitel]

On Thursday, 28. June 2001 19:12, Nigel Metheringham wrote:
> A smallish slew of questions... I am aiming to pull all the stuff I
> learn into a document so hopefully I'll be able to give some of this
> back soon.
>
> In general my T21 is running very nicely now, however here are the
> current problems I am hitting - for reference I am running a RH71
> install with ximian stuff on top.

*snip*

>   4. Any good tips for apm etc configuration for power saving configs?
>      I have atime updates off, and am looking at spindown on the
>      disk.  Howabout losing cron etc whilst on battery?

I use noflushd 2.3 (http://noflushd.sourceforge.net (?)) that I fixed a 
little bit to work with 2.4 kernels. It stops the HD after a user defined 
period without disk reads. While the HD is down, noflushd prevents the update 
daemon from flushing the file system cache back to disk. This works 
perfectly, the HD will stop for ours if I write some LaTeX docs with XEmacs 
and view it with Kdvi. I haven't disabled any stuff like cron or atime 
updates. I also use a selfmade script in /etc/apm/event.d/ (Debian) that 
changes the spin down timeout of noflushd to 10 seconds if running on battery 
and 5 minutes if running on AC power.

Note: noflushd won't work with neither ReiserFS nor SGI XFS.

Tino

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