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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2021/04/15 06:54:18 UTC

[GitHub] [pulsar] lhotari commented on pull request #10239: [CI] Tune GitHub Runner VM options to increase working RAM and improve performance

lhotari commented on pull request #10239:
URL: https://github.com/apache/pulsar/pull/10239#issuecomment-820166521


   GitHub Runner VMs have 7GB RAM + 4GB swap space by default.
   For unit tests, there can be up to 4 test fork JVMs which have `-Xmx1GB`. Besides the 1GB heap, they might consume a significant amount of native memory (including direct memory). There's also the maven JVM running. 
   This is the reason why it seems probably that some flakiness is caused by the VM starting to swap.


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