Init : someone could comment this ?

[Les Mikesell]

Alan Cox wrote:
> On Mon, Jan 07, 2008 at 05:35:33AM +0000, Kevin Kofler wrote:
>> AFAIK, busybox still forks whereever a regular POSIX shell forks, so if the 
>> amount of forks is the problem, AFAICT busybox will resolve absolutely nothing.
> 
> Fork should be pretty cheap - although that depends how much memory is unshared
> by each of the resulting tasks. A smaller cleaner shell such as rc (which was
> designed for this job in plan 9) or ash might well perform better. I'm dubious
> it would be a big difference but someone can bench it.

If a unix-like system can't fork/exec at a rate suitable to handle 
starting it's initial processes you should throw the whole system out 
and start over, because it will be useless even after you get it 
running.  I think the real problem you need to solve is the number of 
file opens that happen between boot up and the end of the init script 
processing.  This: http://kernelslacker.livejournal.com/35270.html
and the presentation on the topic at Oscon looked pretty horrible and 
won't be fixed by using a dumber shell to parse the scripts.  And note 
that the suggestion to break out lines of configurations into individual 
files for easier programmatic editing just compounds this already 
serious problem.

-- 
   Les Mikesell
    lesmikesell at gmail.com