postgresql/src/backend/utils/sort/.gitignore
Robert Haas 337b6f5ecf Speed up in-memory tuplesorting.
Per recent work by Peter Geoghegan, it's significantly faster to
tuplesort on a single sortkey if ApplySortComparator is inlined into
quicksort rather reached via a function pointer.  It's also faster
in general to have a version of quicksort which is specialized for
sorting SortTuple objects rather than objects of arbitrary size and
type.  This requires a couple of additional copies of the quicksort
logic, which in this patch are generate using a Perl script.  There
might be some benefit in adding further specializations here too,
but thus far it's not clear that those gains are worth their weight
in code footprint.
2012-02-15 12:13:32 -05:00

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