PSPP-BUG: [bug #35887] Sort functionality preallocates excessive memory

[Ben Pfaff]

URL:
  <http://savannah.gnu.org/bugs/?35887>

                 Summary: Sort functionality preallocates excessive memory
                 Project: PSPP
            Submitted by: blp
            Submitted on: Sun Mar 18 10:24:49 2012
                Category: Other
                Severity: 5 - Average
                  Status: None
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                 Release: None
                  Effort: 0.00

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Details:

John Darrington writes:
> The partcular problem I encountered stems from the fact, that
> for every category, I'm calling sort_create_writer, which in
> turn allocates space for a large number of cases - even if they
> are never used.  I think I can solve that problem by sorting
> the cases before categorising.  But I'm wondering if similar
> situations will arise where such an optimisation cannot be
> done.

This is excessive.  The sort code should allocate memory as actually needed,
not all in advance.




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