Date: Thu, 3 Feb 2005 10:12:21 +0000 From: Doug Rabson <dfr@nlsystems.com> To: freebsd-current@freebsd.org Cc: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> Subject: Re: cynchronised sleep capbilty.. Message-ID: <200502031012.22602.dfr@nlsystems.com> In-Reply-To: <20050202094256.K88344@localhost> References: <20050201101113.J572@localhost> <200502011913.j11JDXsf084862@khavrinen.lcs.mit.edu> <20050202094256.K88344@localhost>
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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.
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