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https://issues.apache.org/jira/browse/LUCENE-7863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16176616#comment-16176616
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Mikhail Khludnev commented on LUCENE-7863:
------------------------------------------
running longer time search only benchmark makes the difference not so
significant: 107 vs 63 reqs/s edges vs derivatives.
{code}
[java] ------------> Report sum by Prefix (search) and Round (2 about 2
out of 8)
[java] Operation round work dir src runCnt
recsPerRun rec/s elapsedSec avgUsedMem avgTotalMem directory
size, Mb
[java] search_5000 0edge EnwikiEmptyEdgeContentSource 1
5000 107.87 46.35 67,118,120 141,033,472 23,784.00
[java] search_5000 1deriv EnwikiEmptyEdgeContentSource 1
5000 63.49 78.75 95,709,256 119,537,664 8,415.00
{code}
Comparing sampling snapshot shows that derivative terms are slower for
{{readXxxBlock}}.
> Don't repeat postings (and perhaps positions) on ReverseWF, EdgeNGram, etc
> ----------------------------------------------------------------------------
>
> Key: LUCENE-7863
> URL: https://issues.apache.org/jira/browse/LUCENE-7863
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/index
> Reporter: Mikhail Khludnev
> Attachments: bench-byte-array2.out, benchmark-1m.out,
> LUCENE-7863.hazard, LUCENE-7863.patch, LUCENE-7863.patch, LUCENE-7863.patch,
> LUCENE-7863.patch, LUCENE-7863.patch, LUCENE-7863.patch, LUCENE-7863.patch,
> LUCENE-7863.patch, LUCENE-7863.patch
>
>
> h2. Context
> \*suffix and \*infix\* searches on large indexes.
> h2. Problem
> Obviously applying {{ReversedWildcardFilter}} doubles an index size, and I'm
> shuddering to think about EdgeNGrams...
> h2. Proposal
> _DRY_
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