
>55.3. Implementation</A
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CLASS="SECT2"
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CLASS="SECT2"
><A
NAME="GIST-BUFFERING-BUILD"
>55.3.1. GiST buffering build</A
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><P
>   Building large GiST indexes by simply inserting all the tuples tends to be
   slow, because if the index tuples are scattered across the index and the
   index is large enough to not fit in cache, the insertions need to perform
   a lot of random I/O.  Beginning in version 9.2, PostgreSQL supports a more
   efficient method to build GiST indexes based on buffe