w41ter opened a new pull request, #34965:
URL: https://github.com/apache/doris/pull/34965

   
   ## Proposed changes
   
   Issue Number: close #xxx
   
   According to https://bugs.openjdk.org/browse/JDK-8153578, the default 
NewRatio is ignored when UseConcMarkSweepGC is used as the GC algorithm, and 
the value of CMSYoungGenPerWorker is used to calculate the young gen size.
   
   And they said: "The details of this CMS behavior should be documented and 
the CR closed as not-a-bug."
   
   The workaround is:
       To set -XX:NewRatio=2 explicitly if we are using -XX:+UseConcMarkSweepGC
   
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[[email protected]](mailto:[email protected]) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   
   


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