From owner-freebsd-current@FreeBSD.ORG Thu Feb 3 10:17:45 2005 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7047D16A4CE; Thu, 3 Feb 2005 10:17:45 +0000 (GMT) Received: from pimout1-ext.prodigy.net (pimout1-ext.prodigy.net [207.115.63.77]) by mx1.FreeBSD.org (Postfix) with ESMTP id C8B0043D3F; Thu, 3 Feb 2005 10:17:44 +0000 (GMT) (envelope-from julian@elischer.org) Received: from jules (adsl-216-100-134-143.dsl.snfc21.pacbell.net [216.100.134.143])j13AHZGS119594; Thu, 3 Feb 2005 05:17:42 -0500 Date: Thu, 3 Feb 2005 02:17:35 -0800 (PST) From: Julian Elischer X-X-Sender: julian@localhost To: Doug Rabson In-Reply-To: <200502031012.22602.dfr@nlsystems.com> Message-ID: <20050203021603.L583@localhost> References: <20050201101113.J572@localhost> <200502011913.j11JDXsf084862@khavrinen.lcs.mit.edu> <200502031012.22602.dfr@nlsystems.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: Peter Jeremy cc: freebsd-current@freebsd.org cc: current@freebsd.org cc: Garrett Wollman Subject: Re: cynchronised sleep capbilty.. X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Feb 2005 10:17:45 -0000 On Thu, 3 Feb 2005, Doug Rabson wrote: > On Wednesday 02 February 2005 17:44, Julian Elischer wrote: > > very clever! > > > > however it doesn't phaselock to teh time and still drifts. > > I need to trigger on (for example) 10 second boundaries across 50 > > synchronised machines.. > > (so thatthe machines agree about the sampling period.) > > How about a cron job which writes characters into a fifo every ten > secconds. The script can wait for the next ten second mark by reading a > single char from the other end of the fifo. how does a cron job run evey 10 seconds? also this woudl seem something that is a bit beyond a simple shell script in terms of trouble you would go to. > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > -- +------------------------------------+ ______ _ __ | __--_|\ Julian Elischer | \ U \/ / hard at work in | / \ julian@elischer.org +------>x USA \ a very strange | ( OZ ) \___ ___ | country ! +- X_.---._/ presently in San Francisco \_/ \\ v