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https://issues.apache.org/jira/browse/SOLR-15315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17347780#comment-17347780
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ASF subversion and git services commented on SOLR-15315:
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Commit cc696a9022a7da5f6bbcaf2ff98329fbc7e2b8a2 in lucene-solr's branch
refs/heads/branch_8x from Suryakant Pandey
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=cc696a9 ]
SOLR-15315: contrib/ltr MultipleAdditiveTreesModel latency optimisation by
changing recursion to loop (#58)
> MultipleAdditiveTreesModel Latency optimisation for LTR tree traversal
> ----------------------------------------------------------------------
>
> Key: SOLR-15315
> URL: https://issues.apache.org/jira/browse/SOLR-15315
> Project: Solr
> Issue Type: Task
> Components: contrib - LTR
> Reporter: Suryakant Pandey
> Priority: Major
> Time Spent: 5h
> Remaining Estimate: 0h
>
> LTR tree traversal currently happens in a recursive way.
> *Background* :When we tried to increase the number of trees in our production
> solr, we were facing latency issue. From solr profiling it came out that most
> time is spent in recursive call for tree traversal.
>
> Recursion is slower due to overhead of function call stack, so we optimised
> this and translated it to loop based approach. This improved solr latency
> significantly and we were able to scale much better.
>
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