On 11.09.2011 22:30, Alexander Korotkov wrote:

I've got my patch with double sorting picksplit impementation for GiST into
more acceptable form. A little of testing is below. Index creation time is
slightly higher, but search is much faster. The testing datasets were
1) uniform dataset - 10M rows
2) geonames points - 7.6M rows

I've looked at the patch, and took a brief look at the paper - but I still don't understand the algorithm. I just can't get my head around the concepts of split pairs and left/right groups. Can you explain that in layman's terms? Perhaps an example would help?

  Heikki Linnakangas
  EnterpriseDB   http://www.enterprisedb.com

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