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https://issues.apache.org/jira/browse/SOLR-2092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12905938#action_12905938
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Yonik Seeley commented on SOLR-2092:
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Performance results:
Faceting on a single valued field with 100K unique values.
Base doc set size = 100K docs.
facet.limit=10
8 request threads (CPU = 4 core Phenom II)
Average response time was measured externally (i.e. includes all request
parsing, response writing, etc)
|facet.offset|ms trunk|ms patch
|0|18|17
|100|18|17
|1000|23|17
|10000|70|20
|100000|211|26
So as expected, most of the performance benefit is when you are paging deep,
but there are also slight improvements across the board.
I plan on committing soon.
> Use a native priority queue to order facet results
> --------------------------------------------------
>
> Key: SOLR-2092
> URL: https://issues.apache.org/jira/browse/SOLR-2092
> Project: Solr
> Issue Type: Improvement
> Reporter: Yonik Seeley
> Attachments: SOLR-2092.patch, SOLR-2092.patch
>
>
> Deep paging into facets can be improved via use of a native priority queue.
> Comparisons will be faster, and there will be less GC.
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