Date: Tue, 02 Sep 2008 11:24:32 -0500 From: Paul Schmehl <pschmehl_lists@tx.rr.com> To: Albert.Shih@obspm.fr, ElihuJ <chinocubus@yahoo.com> Cc: freebsd-questions@freebsd.org Subject: Re: Cron Question Message-ID: <D59C3198F12C06340437288A@Macintosh.local> In-Reply-To: <20080902160351.GI79391@pcjas.obspm.fr> References: <19272656.post@talk.nabble.com> <20080902160351.GI79391@pcjas.obspm.fr>
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--==========D56D71187A0EEFAEC3DE========== Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Content-Disposition: inline --On September 2, 2008 6:03:51 PM +0200 Albert Shih <Albert.Shih@obspm.fr> = wrote: > Le 02/09/2008 =C3=A0 08:45:52-0700, ElihuJ a =C3=A9crit >> >> Hi all. I have a question about cron jobs that seem to be running to >> long or with multiple copies of itself. For example, I have a backup >> script that I run that seems to make multiple copies of itself. If I >> view the running processes I see numerous instances of the same cron >> job. Is there something I can do to limit this from happening? When it >> does, it drains my CPU and some of my other processes are non >> responsive. Any help would be appreciated. Thank you. > > That's not the to cron to do that. Actually, it could be. If the script is started by cron and is still=20 running when the next job is scheduled, cron will start another process.=20 If they're both still running when the next job is scheduled, you'll have=20 three processes running, etc., etc. The first thing I would do is run the script manually and see how long it=20 takes to complete. Then set your cron jobs up to run with enough time=20 between them for the script to complete and exit before the next job=20 starts. Paul Schmehl, If it isn't already obvious, my opinions are my own and not those of my employer. ****************************************** WARNING: Check the headers before replying --==========D56D71187A0EEFAEC3DE==========--
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