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https://issues.apache.org/jira/browse/LUCENE-7324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15322439#comment-15322439
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Adrien Grand commented on LUCENE-7324:
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+1 to try to improve it, it proved to be a bottleneck for range queries in Solr
http://lucene.472066.n3.nabble.com/Understanding-performance-degradation-in-range-queries-between-Solr-5-2-1-and-4-10-4-td4220145.html
> ExitableDirectoryReader should not check on every term
> ------------------------------------------------------
>
> Key: LUCENE-7324
> URL: https://issues.apache.org/jira/browse/LUCENE-7324
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Simon Willnauer
>
> I looked at ExitableDirectoryReader and to me checking the timeout on every
> term is a pretty heavy operation. I wonder if we can relax that a bit and
> begin with checking when we pull Terms and maybe only every Nth term by
> default? I wonder if we even can make it a function of the number of therms
> ie log(numTerms) I think it's pretty trappy to have something that won't
> perform well or has the risk to not scale well in lucene core?
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