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https://issues.apache.org/jira/browse/GROOVY-10232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17446156#comment-17446156
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Paul King commented on GROOVY-10232:
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Just FYI, there is a switch for Spock for working with Groovy 4 - it is used by
the Groovy build for instance.
https://github.com/apache/groovy/blob/master/buildSrc/src/main/groovy/org.apache.groovy-base.gradle#L220
> Massive increase in memory usage due to CacheableCallSite
> ---------------------------------------------------------
>
> Key: GROOVY-10232
> URL: https://issues.apache.org/jira/browse/GROOVY-10232
> Project: Groovy
> Issue Type: Bug
> Components: groovy-runtime
> Affects Versions: 3.0.9
> Reporter: Emond Papegaaij
> Priority: Major
> Attachments: Screenshot_20210913_161502.png
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> When upgrading our tests from Spock 1.3 with Groovy 2.5 to Spock 2.0 with
> Groovy 3.0.9, we are seeing issue with memory usage caused by
> CacheableCallSite. This memory seems to be retained in classes and is
> therefore never freed. A single Spock test class can take as much as 150mb
> memory. The total amount of memory sums up to several gigabytes of additional
> memory, causing our tests to take about 3 times as much memory as with Spock
> 1.3 and Groovy 2.5.
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