[Peeweelinux] newbie questions

[Troy Engel]

Ricardo Trindade wrote:
> 
> 	Why IBM instead of sun ? speed ?

Mainly because they have this nifty serial package that would support 
all kinds of stuff -- our particular project requires reading from 5-7 
serial ports to gather data, and spit it back out (upstream) via PPP or 
ethernet.  So, the initial research made them stick out (and, a much 
smaller footprint?)

> 	what's emlog ?

It's this "fake" /var/log/messages subsystem.  Basically, 
/var/log/messages is actually a device node, and you insmod emlog.o on 
bootup (you have to build it into your kernel, the options for emlog are 
present in the "stock" 2.2.17 kernel provided by PWL).  What happens is 
that it uses some sort of buffered, circular "last process only" stuff 
(I'm not sure 100% the details), so that /var/log/messages is never a 
real file, and therefore can't fill up your ram filesystem! tada. ;) 
Very cool....

http://www.circlemud.org/~jelson/software/emlog/

-te

-- 
Troy Engel, Systems Engineer
Hockey. Kinda like Figure Skating in a War Zone.