On Fri, 16 Feb 2007, Frank M. Ramaekers wrote:
Sure I understand that, but If I wanted it to be within 15
seconds response, I'd have to check 4times x 60 seconds x 60
minutes x 24 hours per day. Kind of a waste for a file that
may or may not be transmitted each day.
push v pull, poll v select -- SGI formerly had 'fam' and the
fam daemon to make this more economical, and we shipped it in
centos-2
http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi?coll=0650&db=bks&fname=/SGI_Developer/books/IIDsktp_IG/sgi_html/ch08.html
and
http://oss.sgi.com/projects/fam/
--------------------
If one wanted to enqueue events without polling, use a tail -f
on the xferlog, and | grep the desired events, feeding those
to an enqueuer, or just fire off a child as each new item is
completed -- Such a script can live in the /etc/inittab
quite happily, and Linux will handle the scheduling for you.
-- Russ Herrold
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