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https://issues.apache.org/jira/browse/KARAF-1019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13152074#comment-13152074
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Alexey Markevich commented on KARAF-1019:
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http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html
-XX:MaxPermSize=64m Size of the Permanent Generation. [5.0 and newer: 64
bit VMs are scaled 30% larger; 1.4 amd64: 96m; 1.3.1 -client: 32m.]
I see two ways:
1. Detect arch like at
https://github.com/Talend/tesb-rt-se/tree/master/talend-esb/src/main/bin
2. Keep JVM to take care about optimal values.
> Set java memory options only when required
> ------------------------------------------
>
> Key: KARAF-1019
> URL: https://issues.apache.org/jira/browse/KARAF-1019
> Project: Karaf
> Issue Type: Improvement
> Components: karaf-core
> Affects Versions: 2.2.4
> Environment: Windows 2003 @ amd64
> jdk1.6.0_29 x64
> Reporter: Alexey Markevich
> Assignee: Jean-Baptiste Onofré
> Fix For: 2.2.5, 3.0.0
>
> Attachments: karaf, karaf.bat, karaf.bat, set_java
> memory_options_only_when_required.patch, set_java
> memory_options_only_when_required_unix.patch
>
>
> Related to https://issues.apache.org/jira/browse/KARAF-818
> Using my x64 environment I got PermGen space error.
> Sure - I can change JAVA_MAX_MEM, JAVA_PERM_MEM, JAVA_MIN_MEM,
> JAVA_MAX_PERM_MEM variables.
> But I found that without memory settings [1] my scenario works fine.
> Is it possible to set java memory options only if variables are present?
> 1. set DEFAULT_JAVA_OPTS=-server -Dderby.system.home="%KARAF_DATA%\derby"
> -Dderby.storage.fileSyncTransactionLog=true -Dcom.sun.management.jmxremote
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