[jira] [Commented] (LUCENE-9986) Create a simple "real world" regexp benchmark

["Michael Sokolov (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-9986?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17355684#comment-17355684 ] 

Michael Sokolov commented on LUCENE-9986:
-----------------------------------------

[This SO post|https://stackoverflow.com/questions/15819919/where-can-i-find-unit-tests-for-regular-expressions-in-multiple-languages] links to many test suites in various open source projects. Not sure which would be best/best licensed for copying here?

> Create a simple "real world" regexp benchmark
> ---------------------------------------------
>
>                 Key: LUCENE-9986
>                 URL: https://issues.apache.org/jira/browse/LUCENE-9986
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Michael McCandless
>            Priority: Major
>
> For issues like LUCENE-9983, where we are struggling to decide which low-level optimizations to make for our (complicated!) {{determinize}} method, it would really help to have a large, real-world corpus of regexps to evaluate performance metrics of our automata operations, like CPU and HEAP required to parse the regexp and determinize.
> Does anyone know of such an existing, hopefully compatibly licensed, corpus?
> Probably we would add these benchmarks to {{luceneutil}}.



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