[jboss-jira] [JBoss JIRA] (WFLY-4681) Reevaluation of java memory settings

[Tomaz Cerar (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-4681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13071416#comment-13071416 ] 

Tomaz Cerar commented on WFLY-4681:
-----------------------------------

we for sure don't need  -XX:+UseCompressedOops as they are turned on by default since JDK6u23 if appropriate.
afair metaspace doesn't have it's own parameters / configuration for size, as it resides in main heap.

> Reevaluation of java memory settings
> ------------------------------------
>
>                 Key: WFLY-4681
>                 URL: https://issues.jboss.org/browse/WFLY-4681
>             Project: WildFly
>          Issue Type: Bug
>          Components: Server
>    Affects Versions: 10.0.0.Alpha1
>            Reporter: Marek Kopecký
>            Assignee: Andrig Miller
>
> Based on [~ctomc]'s comment in https://issues.jboss.org/browse/JBEAP-149,
> perf team should do some testing and suggest best values for java memory settings in WildFly (-Xms, -Xmx, ...). This settings need to be completely reevaluated as EAP7 moved to JDK8 as requirement.
> JDK8 doesn't have PermGen space anymore but metaspace, this completely changes how memory settings need to be tuned.



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