Yves Dorfsman wrote: > [email protected] wrote: > > > > note that there is a flag that the backup software should be using to tell > > the system that it's not going to be accessing this data again. > > Which flag, on which function ? > At the end of the day, aren't all functions reading from disk mapping to an > read(3) ? > > >
The only flag I can think of that would do this is O_DIRECT. I'm not sure you'd actually want this for a backup client though, since AFAIK it disables read-ahead as well. Without a cache there's nothing to prefetch into. -- -- Skylar Thompson ([email protected]) -- http://www.cs.earlham.edu/~skylar/
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