[jira] [Commented] (GEODE-8503) Limit netty threads used in PubSubDUnitTest

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GEODE-8503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17197767#comment-17197767 ] 

ASF GitHub Bot commented on GEODE-8503:
---------------------------------------

jdeppe-pivotal opened a new pull request #5522:
URL: https://github.com/apache/geode/pull/5522


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> Limit netty threads used in PubSubDUnitTest
> -------------------------------------------
>
>                 Key: GEODE-8503
>                 URL: https://issues.apache.org/jira/browse/GEODE-8503
>             Project: Geode
>          Issue Type: Test
>          Components: redis
>            Reporter: Jens Deppe
>            Assignee: Jens Deppe
>            Priority: Major
>
> The {{PubSubDUnitTest}} currently fails when run under stress ({{StressNewTest}} job in CI). There are various factors at play here:
> - Test hosts have 96 vCPUs and netty will use 2x this number for each EventLoopGroup (of which we have 2). For some tests we end up needing almost 1600 threads which seems excessive.
> - VMs are not recycled between every test run but thread resources are also not cleaned up synchronously between runs; this seems to be the biggest problem.



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