Date: Thu, 3 Feb 2005 11:18:13 +0000 From: Doug Rabson <dfr@qubesoft.com> To: Julian Elischer <julian@elischer.org> Cc: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> Subject: Re: cynchronised sleep capbilty.. Message-ID: <f26cd3da3a99b4a3290586c15b758adb@qubesoft.com> In-Reply-To: <20050203021603.L583@localhost> References: <20050201101113.J572@localhost> <200502011913.j11JDXsf084862@khavrinen.lcs.mit.edu> <20050202094256.K88344@localhost> <200502031012.22602.dfr@nlsystems.com> <20050203021603.L583@localhost>
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On 3 Feb 2005, at 10:17, Julian Elischer wrote: > 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. A very good point - I forgot that cron only goes down to minute resolution :-) >
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