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https://issues.apache.org/jira/browse/DAFFODIL-2627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17478166#comment-17478166
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Mike Beckerle commented on DAFFODIL-2627:
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What I mean is instead of each test driver ".scala" file creating its own
singleton holding the runner, isntead we just have one .scala file create one
that all the other .scala files just use.
> Performance regression in TDML processor
> ----------------------------------------
>
> Key: DAFFODIL-2627
> URL: https://issues.apache.org/jira/browse/DAFFODIL-2627
> Project: Daffodil
> Issue Type: Bug
> Components: TDML Runner
> Affects Versions: 3.2.0
> Reporter: Josh Adams
> Priority: Major
>
> While working on a customer project we noticed a significant increase in the
> amount of time it took to run our test suit (over 600 tests) after upgrading
> from Daffodil 2.7.0 to 3.2.1. We were seeing roughly a 4x increase in time
> to complete the same set of tests.
> I've narrowed the performance regression to commit
> 0700ee8dc9531497f3e8b0fdf9266f8e3b105c27 which involved a removal of the
> schema compilation cache, which is likely causing the schema to need to be
> recompile much more frequently.
> We use a relatively large schema (over 10,000 lines), but it is the same
> schema used for all tests.
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