Re: [Lse-tech] Re: Elsa 0.2 Released

[Erich F. <ef...@hp...>]

On Wednesday 17 November 2004 10:49, Guillaume Thouvenin wrote:
> Selon "Philip J. Mucci" <mu...@cs...>:
> 
> > Why does ELSA use a kernel module to do something that could easily be
> > done in user space by trapping fork/exec in a LD_PRELOADed library 
> > with a constructor?
...
> - What is the performance overhead compared to a module (context 
> switch..) ?
> - Are we sure to get all forks?

With LD_PRELOAD you won't catch statically linked binaries. This
provides users a way to run unaccounted processes and would make
PAGG useless. The kernel patch is necessary AFAICS.

Regards,
Erich