Details
-
Improvement
-
Status: Closed
-
Minor
-
Resolution: Fixed
-
None
-
None
-
None
Description
This change modifies BKDReader to read the packedIndex bytes off heap rather than load them all on heap at a single time.
Questions for discussion:
- Should BKDReader only support packedIndex off heap?
- If not, how should the choice be made?
Using luceneutils IndexAndSearchOpenStreetMaps present the following test results:
with -box -points (patch)
READER MB: 1.1345596313476562
BEST M hits/sec: 73.34277344984474
BEST QPS: 74.63011169783009
with -box -points (original)
READER MB: 1.7249317169189453
BEST M hits/sec: 73.77125157623486
BEST QPS: 75.06611062353801
with -nearest 10 -points (patch)
READER MB: 1.1345596313476562
BEST M hits/sec: 0.013586298373879497
BEST QPS: 1358.6298373879497
with -nearest 10 -points (original)
READER MB: 1.7249317169189453
BEST M hits/sec: 0.01445208197367343
BEST QPS: 1445.208197367343
with -box -geo3d (patch)
READER MB: 1.1345596313476562
BEST M hits/sec: 39.84968715299074
BEST QPS: 40.54914292796736
with -box -geo3d (original)
READER MB: 1.7456226348876953
BEST M hits/sec: 40.45051734329004
BEST QPS: 41.160519101846695