From owner-cvs-all  Sun Dec 10 14:50:46 2000
From owner-cvs-all@FreeBSD.ORG  Sun Dec 10 14:50:42 2000
Return-Path: <owner-cvs-all@FreeBSD.ORG>
Delivered-To: cvs-all@freebsd.org
Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [134.226.81.11])
	by hub.freebsd.org (Postfix) with SMTP
	id 6586E37B400; Sun, 10 Dec 2000 14:50:41 -0800 (PST)
Received: from walton.maths.tcd.ie by salmon.maths.tcd.ie with SMTP
          id <aa31621@salmon>; 10 Dec 2000 22:50:40 +0000 (GMT)
Date: Sun, 10 Dec 2000 22:50:39 +0000
From: David Malone <dwmalone@maths.tcd.ie>
To: Robert Watson <rwatson@FreeBSD.org>
Cc: Brian Somers <brian@Awfulhak.org>,
	Dag-Erling Smorgrav <des@ofug.org>,
	"David E. O'Brien" <obrien@FreeBSD.org>, cvs-committers@FreeBSD.org,
	cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/etc crontab
Message-ID: <20001210225039.A40111@walton.maths.tcd.ie>
References: <200012092254.eB9Msbk55407@hak.lan.Awfulhak.org> <Pine.NEB.3.96L.1001209223834.82272B-100000@fledge.watson.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.2.5i
In-Reply-To: <Pine.NEB.3.96L.1001209223834.82272B-100000@fledge.watson.org>; from rwatson@FreeBSD.org on Sat, Dec 09, 2000 at 10:42:41PM -0500
Sender: dwmalone@maths.tcd.ie
Sender: owner-cvs-all@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

On Sat, Dec 09, 2000 at 10:42:41PM -0500, Robert Watson wrote:

> On a related note, this is also more susceptible to cascading failure, as
> it queues the work rather than canceling it if resources aren't available.

We use something like the suggested, which skips the job if the
old one is still running:

lockf -s -t 0 /var/run/vm-fault-cleaner.lock /local/etc/vm-fault-cleaner.pl || true

You need the "|| true" to stop crontab complaining about the job
failing.

	David.


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message