Linux like most modern OSes, uses spare RAM to cache disk accesses. Thus, when you use retrieve you are
probably not actually going off the disk. Also, IPC::SharedCache uses Storable to put the
data structure into its shared memory segment(s) (I believe it divides the hash between multiple segments, but I'm not
entirely sure.) This is
because it's very hard to move perl's internal representation of
these data structures into the shared memory while having
it work on all processes and not having perl
move it out of that space.)
Also, IPC::SharedCache does synchronization to make
sure that one does not write the data structure while another's reading it and get stale data, which also carries it's own overhead. | [reply]
[d/l] |
