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https://issues.apache.org/jira/browse/TINKERPOP-2888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17713481#comment-17713481
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Clément de Groc commented on TINKERPOP-2888:
--------------------------------------------
I wouldn't consider our traversals heavily nested and we're only using
{{ReadOnlyStrategy}} at the moment I think (though JanusGraph has [a number of
default
strategies|https://github.com/JanusGraph/janusgraph/blob/v0.6.3/janusgraph-core/src/main/java/org/janusgraph/graphdb/database/StandardJanusGraph.java#L131-L142]
applied automatically).
> DefaultTraversal's applyStrategies performance decrease
> -------------------------------------------------------
>
> Key: TINKERPOP-2888
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2888
> Project: TinkerPop
> Issue Type: Bug
> Components: server
> Affects Versions: 3.6.1, 3.5.4
> Reporter: Clément de Groc
> Priority: Major
>
> We have recently upgraded from JanusGraph {{0.6.2}} (TinkerPop {{{}3.5.3{}}})
> to JanusGraph {{0.6.3}} (TinkerPop {{{}3.5.5{}}}) and have observed an
> increase in all latency metrics reported by Gremlin Server.
> Using a profiler we have seen that more time is spent in
> {{TraversalHelper.applyTraversalRecursively}} calling itself recursively
> multiple times.
> Then we've narrowed down the issue to [this
> change|https://github.com/apache/tinkerpop/commit/1a548e808922a0eae23b586fe4d6567238989299]
> and resolved the latency problem by reverting the change in
> {{{}DefaultTraversal.java{}}}.
> TLDR; as far as I understand, it looks like, in our case at least, this
> [other round of recursion does have a significant performance
> impact|https://github.com/apache/tinkerpop/pull/1699#issuecomment-1170430130].
> As I'm not too familiar with that part of TinkerPop code, it's unclear to me
> if that's because of our usage of JanusGraph/TinkerPop (feel free to advise).
> But in any case, I thought that was worth reporting in case others hit the
> same issue.
> Happy to share/investigate more if needed.
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