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https://issues.apache.org/jira/browse/LUCENE-1483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12658843#action_12658843
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Michael McCandless commented on LUCENE-1483:
--------------------------------------------
Current results with topN=1000:
||numSeg||index||sortBy||method||query||topN||hits||warm||qps||warmnew||qpsnew||pctg||
|1|simple|country|val|text|1000|2000000| 0.9| 10.0| 0.8| 11.4| 14.0%|
|1|simple|country|ord|text|1000|2000000| 0.9| 10.0| 0.6| 13.7| 37.0%|
|1|simple|country|ordval|text|1000|2000000| 0.9| 10.0| 0.6| 13.3| 33.0%|
|1|simple|country|orddem|text|1000|2000000| 0.9| 10.0| 0.7| 13.1| 31.0%|
|1|wiki|title|val|147|1000| 4984| 2.1| 740.6| 2.3| 381.8|-48.4%|
|1|wiki|title|ord|147|1000| 4984| 2.1| 740.6| 2.1| 905.2| 22.2%|
|1|wiki|title|ordval|147|1000| 4984| 2.1| 740.6| 2.1| 906.4| 22.4%|
|1|wiki|title|orddem|147|1000| 4984| 2.1| 740.6| 2.1| 834.5| 12.7%|
|1|wiki|title|val|text|1000| 97191| 2.1| 108.7| 2.4| 32.9|-69.7%|
|1|wiki|title|ord|text|1000| 97191| 2.1| 108.7| 2.1| 124.6| 14.6%|
|1|wiki|title|ordval|text|1000| 97191| 2.1| 108.7| 2.1| 123.7| 13.8%|
|1|wiki|title|orddem|text|1000| 97191| 2.1| 108.7| 2.1| 119.9| 10.3%|
|1|wiki|title|val|1|1000| 386435| 2.1| 46.2| 2.4| 12.6|-72.7%|
|1|wiki|title|ord|1|1000| 386435| 2.1| 46.2| 2.1| 60.3| 30.5%|
|1|wiki|title|ordval|1|1000| 386435| 2.1| 46.2| 2.1| 59.3| 28.4%|
|1|wiki|title|orddem|1|1000| 386435| 2.1| 46.2| 2.1| 57.9| 25.3%|
||numSeg||index||sortBy||method||query||topN||hits||warm||qps||warmnew||qpsnew||pctg||
|10|simple|country|val|text|1000|2000000| 0.8| 9.7| 0.7| 11.2| 15.5%|
|10|simple|country|ord|text|1000|2000000| 0.8| 9.7| 0.6| 13.5| 39.2%|
|10|simple|country|ordval|text|1000|2000000| 0.8| 9.7| 0.6| 13.0| 34.0%|
|10|simple|country|orddem|text|1000|2000000| 0.8| 9.7| 0.6| 12.8| 32.0%|
|10|wiki|title|val|147|1000| 4984| 12.7| 664.2| 2.4| 417.3|-37.2%|
|10|wiki|title|ord|147|1000| 4984| 12.7| 664.2| 2.2| 58.3|-91.2%|
|10|wiki|title|ordval|147|1000| 4984| 12.7| 664.2| 2.1| 72.2|-89.1%|
|10|wiki|title|orddem|147|1000| 4984| 12.7| 664.2| 2.1| 92.5|-86.1%|
|10|wiki|title|val|text|1000| 97191| 12.6| 100.4| 2.4| 33.5|-66.6%|
|10|wiki|title|ord|text|1000| 97191| 12.6| 100.4| 2.3| 65.3|-35.0%|
|10|wiki|title|ordval|text|1000| 97191| 12.6| 100.4| 2.2| 78.7|-21.6%|
|10|wiki|title|orddem|text|1000| 97191| 12.6| 100.4| 2.2| 79.8|-20.5%|
|10|wiki|title|val|1|1000| 386435| 12.7| 42.4| 2.5| 14.6|-65.6%|
|10|wiki|title|ord|1|1000| 386435| 12.7| 42.4| 2.7| 46.2| 9.0%|
|10|wiki|title|ordval|1|1000| 386435| 12.7| 42.4| 2.1| 51.1| 20.5%|
|10|wiki|title|orddem|1|1000| 386435| 12.7| 42.4| 2.1| 51.5| 21.5%|
||numSeg||index||sortBy||method||query||topN||hits||warm||qps||warmnew||qpsnew||pctg||
|100|simple|country|val|text|1000|2000000| 1.0| 8.5| 1.3| 9.2| 8.2%|
|100|simple|country|ord|text|1000|2000000| 1.0| 8.5| 0.6| 10.3| 21.2%|
|100|simple|country|ordval|text|1000|2000000| 1.0| 8.5| 0.6| 10.0| 17.6%|
|100|simple|country|orddem|text|1000|2000000| 1.0| 8.5| 0.6| 10.6| 24.7%|
|100|wiki|title|val|147|1000| 4984| 93.8| 442.8| 2.9| 245.2|-44.6%|
|100|wiki|title|ord|147|1000| 4984| 93.8| 442.8| 2.3| 12.0|-97.3%|
|100|wiki|title|ordval|147|1000| 4984| 93.8| 442.8| 2.2| 18.0|-95.9%|
|100|wiki|title|orddem|147|1000| 4984| 93.8| 442.8| 2.1| 58.2|-86.9%|
|100|wiki|title|val|text|1000| 97191| 93.4| 88.0| 2.5| 33.5|-61.9%|
|100|wiki|title|ord|text|1000| 97191| 93.4| 88.0| 2.3| 17.6|-80.0%|
|100|wiki|title|ordval|text|1000| 97191| 93.4| 88.0| 2.2| 29.8|-66.1%|
|100|wiki|title|orddem|text|1000| 97191| 93.4| 88.0| 2.2| 56.6|-35.7%|
|100|wiki|title|val|1|1000| 386435| 92.8| 41.0| 2.6| 14.9|-63.7%|
|100|wiki|title|ord|1|1000| 386435| 92.8| 41.0| 2.7| 16.5|-59.8%|
|100|wiki|title|ordval|1|1000| 386435| 92.8| 41.0| 2.2| 28.6|-30.2%|
|100|wiki|title|orddem|1|1000| 386435| 92.8| 41.0| 2.2| 44.1| 7.6%|
> Change IndexSearcher to use MultiSearcher semantics for multiple subreaders
> ---------------------------------------------------------------------------
>
> Key: LUCENE-1483
> URL: https://issues.apache.org/jira/browse/LUCENE-1483
> Project: Lucene - Java
> Issue Type: Improvement
> Affects Versions: 2.9
> Reporter: Mark Miller
> Priority: Minor
> Attachments: LUCENE-1483.patch, LUCENE-1483.patch, LUCENE-1483.patch,
> LUCENE-1483.patch, LUCENE-1483.patch, LUCENE-1483.patch, LUCENE-1483.patch,
> LUCENE-1483.patch, LUCENE-1483.patch, LUCENE-1483.patch, LUCENE-1483.patch,
> LUCENE-1483.patch, LUCENE-1483.patch, LUCENE-1483.patch, LUCENE-1483.patch,
> LUCENE-1483.patch, LUCENE-1483.patch, LUCENE-1483.patch, LUCENE-1483.patch,
> LUCENE-1483.patch, sortBench.py, sortCollate.py
>
>
> FieldCache and Filters are forced down to a single segment reader, allowing
> for individual segment reloading on reopen.
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