Re: [RFD] 'nice' attribute for executable files

[Lee Revell <rlrevell@joe-job.com>]

On Wed, 2005-03-30 at 18:07 +0200, Wiktor wrote:
> Bodo Eggert wrote:
> > Wiktor <victorjan@poczta.onet.pl> wrote:
> >>so i thought that it would be nice to add an attribute to file
> >>(changable only for root) that would modify nice value of process when
> >>it starts. if there is one byte free in ext2/3 file metadata, maybe it
> >>could be used for that? i think that it woundn't be more dangerous than
> >>setuid bit.
> > 
> > I guess there should be a maximum renice value ulimit instead, which would
> > allow running allmost any user task on a higher nice level, except the
> > important stuff, with the additional benefit of being able to temporarily
> > renice some tasks until the more important work is done.
> > 
> > I remember something similar being discussed for realtime tasks, but I don't
> > remember the outcome.
> 
> my xmms problem is unimportant here, i've posted this thread to propose 
> some new feature in filesystem, not to solve problem with multimedia player!
> 
> max renice ulimit is quite good idea, but it allows to change nice of 
> *any* process user has permissions to. it could be implemented also, but 
>   the idea of 'nice' file attribute is to allow *only* some process be 
> run with lower nice. what's more, that nice would be *always* the same 
> (at process startup)!

Please see the voluminous realtime-lsm threads for some objections to
this approach.

Lee