[ltp] what to use to save battery

[Andrew Barr]

On Tue, 2006-09-05 at 10:36 -0500, matthew.garman@gmail.com wrote:
> Trying to help elaborate some of the points below...
> 
> > - a SD Card for the home directory
> 
>     I.e., to avoid running your actual hard drive.  Use SD, compact
>     flash, a "thumb" or "jump" drive, etc.  The basic principle is
>     to use a low-power device (which your hard drive is not) for
>     storage.

Don't forget that having active USB devices prevents CPU powersaving.


> > - don't use postfix/exim use ssmtp instead
> 
>     I believe these all belong to the class of applications known as
>     MTAs, or mail transport agents.
> 
>     If I'm not mistaken, postfix and exim are both daemons (meaning,
>     running programs that consume CPU/disk/RAM), whereas ssmtp is
>     more "reactive", only doing something when it absolutely needs
>     to.  Someone check me on this!

Yes, it just sends mail using an external SMTP server when invoked as
"sendmail". It does no queue management or anything else, AFAIK. This is
what I use.