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Posted to issues@lucene.apache.org by "Michael Sokolov (Jira)" <ji...@apache.org> on 2021/03/15 21:36:00 UTC

[jira] [Created] (LUCENE-9846) Improve the initial allocation size of LongHeap

Michael Sokolov created LUCENE-9846:
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             Summary: Improve the initial allocation size of LongHeap
                 Key: LUCENE-9846
                 URL: https://issues.apache.org/jira/browse/LUCENE-9846
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Michael Sokolov


Today {{LongHeap.push/ArrayUtil.grow}} is apparently a hot spot. Can we predict the correct maximum size better? It seems likely this is due to the candidates queue in {{HnswGraph.search}} which is the only place where these heaps are used that can extend their size.



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