A "simple" DB like SQLite probably suits your purpose better than a huge in-memory hash table
Maybe. We need to learn more about the OP's requirements and algorithms. If the OP's algorithm really does need to perform vast numbers of table lookups, Perl hashes will probably be at least ten times faster than SQLite, as indicated by:

Note that in High Performance Game of Life (and related Fastest way to lookup a point in a set) profiling indicated that the millions of hash lookups required by the simple GOL algorithm was the dominant performance hot spot ... and the overhead of calling out to (external) SQLite for these was an order of magnitude slower than native Perl hash lookups (so long as you have enough physical memory to comfortably hold the hashes).

Buk comment: "however fast the C/C++ DB code is, calling into it from Perl adds a layer of unavoidable overhead that Perl's built-in hashes do not have"

In reply to Re^2: Perl memory limit - Windows64 strawberry perl by eyepopslikeamosquito
in thread Perl memory limit - Windows64 strawberry perl by sectokia

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