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Date:      Wed, 15 Nov 2000 09:39:36 -0800
From:      Lars Eggert <larse@ISI.EDU>
To:        "Steve O'Hara-Smith" <steveo@eircom.net>
Cc:        janb@cs.utep.edu, freebsd-stable@freebsd.org
Subject:   Re: how can I run utilities at idle time?
Message-ID:  <3A12CA58.5DBD2BF5@isi.edu>
References:  <Pine.GSO.4.05.10011150957150.24219-100000@gecko> <20001115183715.371bf7a6.steveo@eircom.net>

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Steve O'Hara-Smith wrote:
> 
> On Wed, 15 Nov 2000 09:59:37 -0700 (MST)
> <janb@cs.utep.edu> wrote:
> 
> > I would like to run a cron type service, but the utilities run from this
> > servic (updating the locate database, for example) should only take up
> > idle time on the computer. Does anybody know how to do this?
> 
>         idprio is the tool for doing this.

If your definition of "idle" is "idle CPU time". If your bottleneck
resource is something else (i.e. network or disk space), running processes
under idprio will still consume bottleneck capacities.

>         There were some comments a while back that rtprio and idprio had problems and
> should not be used. Is this still the case (searching the archives is giving too many
> irrelevant hits) ?

Priority inversion.

Lars
-- 
Lars Eggert <larse@isi.edu>                 Information Sciences Institute
http://www.isi.edu/larse/                University of Southern California
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