Building 2.4.3b4 raised once again a question in my mind.

There are several things amanda/configure checks for for which
there could be several choices on the same machine.  Some of
these have configure options to select the builders preference.
Others can be hand-tuned in config.h.  Here are just 3 examples:

  file locking -- flock, fcntl, or file based
  db format    -- text, db, gdbm, ndbm, ...
  ipc          -- shared memory or memory mapped files (mmap)

How does one choose one facility vs. another.  What are the pros
and cons of flock vs. fcntl locking.  Or shm vs mmap.  Or ...

'bout time to update from 2.4.2,
so I might as well get it
right this time :))

-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
 JG Computing
 4455 Province Line Road        (609) 252-0159
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