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https://issues.apache.org/jira/browse/SOLR-10150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15870363#comment-15870363
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Yago Riveiro commented on SOLR-10150:
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I think this is a duplicate of SOLR-10130
> Solr 6.4 up to 10x slower than 6.3
> ----------------------------------
>
> Key: SOLR-10150
> URL: https://issues.apache.org/jira/browse/SOLR-10150
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Fabrizio Fortino
> Priority: Critical
> Labels: performance
> Attachments: Screen Shot 2017-02-16 at 17.31.02.png
>
>
> We noticed a considerable performance degradation (5x to 10x) using Solr 6.4
> and huge increase of CPU utilization. Our use case is pretty simple: we have
> a single Solr Core with around 600K small size documents. We just do lookups
> by key (no full text searches) and use faceting capabilities.
> Using the Solr Admin Thread Dump utilities we noticed a lot of threads using
> considerable cpuTime / userTime on codehale metrics (snapshot attached). The
> metrics part has been drastically changed in 6.4
> (https://issues.apache.org/jira/browse/SOLR-4735). Rolling back to Solr 6.3
> has solved our performance problems.
> Is there any way to disable these metrics in version 6.4 ?
> Thanks!
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