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Date:      Mon, 27 Nov 1995 16:28:50 +1000
From:      Stephen Hocking <sysseh@devetir.qld.gov.au>
To:        current@freebsd.org
Subject:   Prioritised disk requests
Message-ID:  <199511270628.GAA00550@netfl15a.devetir.qld.gov.au>

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Has anyone thought of a mechanism (similar to stuff I've seen on Masscomp 
machines) where one could indicate that a particular stream of disk I/O had a 
higher priority than normal? Masscomp used to have a B_URGENT flag for these 
blocks in the buffer cache (for semi-realtime I/O when acquiring or 
transmitting data). CD burners could do with this, or people trying to keep 
tapes streaming on backups.

	Stephen
-- 

        I do not speak for the Worker's Compensation Board of Queensland -
                     They don't pay me enough for that!





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