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Posted to dev@lucene.apache.org by "Yonik Seeley (JIRA)" <ji...@apache.org> on 2016/10/18 02:44:58 UTC
[jira] [Updated] (SOLR-9599) DocValues performance regression with
new iterator API
[ https://issues.apache.org/jira/browse/SOLR-9599?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yonik Seeley updated SOLR-9599:
-------------------------------
Summary: DocValues performance regression with new iterator API (was: Facet performance regression using fieldcache and new DV iterator API)
> DocValues performance regression with new iterator API
> ------------------------------------------------------
>
> Key: SOLR-9599
> URL: https://issues.apache.org/jira/browse/SOLR-9599
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: master (7.0)
> Reporter: Yonik Seeley
> Fix For: master (7.0)
>
>
> I did a quick performance comparison of faceting indexed fields (i.e. docvalues are not stored) using method=dv before and after the new docvalues iterator went in (LUCENE-7407).
> 5M document index, 21 segments, single valued string fields w/ no missing values.
> || field cardinality || new_time / old_time ||
> |10|2.01|
> |1000|2.02|
> |10000|1.85|
> |100000|1.56|
> |1000000|1.31|
> So unfortunately, often twice as slow.
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