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Posted to dev@lucene.apache.org by "Jack Conradson (JIRA)" <ji...@apache.org> on 2019/07/23 23:45:00 UTC
[jira] [Created] (LUCENE-8932) Allow BKDReader packedIndex to be
off heap
Jack Conradson created LUCENE-8932:
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Summary: Allow BKDReader packedIndex to be off heap
Key: LUCENE-8932
URL: https://issues.apache.org/jira/browse/LUCENE-8932
Project: Lucene - Core
Issue Type: Improvement
Reporter: Jack Conradson
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
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