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

[Ståle Pedersen (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-4681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13071470#comment-13071470 ] 

Ståle Pedersen commented on WFLY-4681:
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hi, i think we could remove the compressedOops options since its default now and if some customers are using ibm jdk i think its up to them to specify that specific option.
regarding the Xms and Xmx options i think they are fairly conservative. most laptops come with minimum 4gig memory, but then again, are we targeting "all" platforms pi's, tablets, etc or laptops/desktops/servers? - imo we should target the latter so changing it to Xms256M and Xmx1G might be better?
another option we could look into is the -XX:MaxPermSize?

> 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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