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https://issues.apache.org/jira/browse/IGNITE-6521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16360445#comment-16360445
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ASF GitHub Bot commented on IGNITE-6521:
----------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/ignite/pull/2858


> Review default JVM options for better performance
> -------------------------------------------------
>
>                 Key: IGNITE-6521
>                 URL: https://issues.apache.org/jira/browse/IGNITE-6521
>             Project: Ignite
>          Issue Type: Improvement
>          Components: general, visor
>    Affects Versions: 2.1
>            Reporter: Alexandr Kuramshin
>            Assignee: Dmitriy Govorukhin
>            Priority: Major
>             Fix For: 2.5
>
>
> Non-optimal recommendations are present in ignite startup scrips
> {noformat}
> ::
> :: Uncomment the following GC settings if you see spikes in your throughput 
> due to Garbage Collection.
> ::
> :: set JVM_OPTS=%JVM_OPTS% -XX:+UseParNewGC -XX:+UseConcMarkSweepGC 
> -XX:+UseTLAB -XX:NewSize=128m -XX:MaxNewSize=128m
> :: set JVM_OPTS=%JVM_OPTS% -XX:MaxTenuringThreshold=0 -XX:SurvivorRatio=1024 
> -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=60
> {noformat}
> Some utilities (like Visor) are hanged up in continuous GCs when connected to 
> large clusters (above one hundred nodes). Even after using large heap (about 
> 32 Gb).
> I'd like to propose to remove this lines and modify default JVM_OPTS as 
> follows
> {noformat}
> set JVM_OPTS=-Xms1g -Xmx8g -XX:+UseG1GC -server -XX:+AggressiveOpts 
> -XX:MaxPermSize=256m
> {noformat}



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