[jboss-jira] [JBoss JIRA] (WFCORE-4115) JDK11 - GC logging format needs to be reviewed

[Aaron Ogburn (Jira)]

    [ https://issues.jboss.org/browse/WFCORE-4115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13658506#comment-13658506 ] 

Aaron Ogburn commented on WFCORE-4115:
--------------------------------------

Thanks, [~jamezp].  So java 11 is defaulting to G1 and Java 8 defaults to parallel throughput collector here so that's a notable difference.  Parallel GC on java 8 produces 1 log line per GC.  G1 produces multiline entries for each GC.  So if you used G1 on java 8 also and compared, you'd probably see more similar verbosity from multiline entires.  I'm not aware of anything to scale back G1 verbosity on java 8 or 11.

> JDK11 - GC logging format needs to be reviewed
> ----------------------------------------------
>
>                 Key: WFCORE-4115
>                 URL: https://issues.jboss.org/browse/WFCORE-4115
>             Project: WildFly Core
>          Issue Type: Bug
>          Components: Scripts, Server
>            Reporter: Marek Kopecký
>            Assignee: James Perkins
>            Priority: Major
>              Labels: Java11, jdk11
>         Attachments: java-11-gc.log, java-8-gc.log
>
>
> * Weird naming of gc log files
> ** I test this with JDK11
> ** I start standalone and stop standalone
> ** JDK10 creates JBOSS_HOME/standalone/log/gc.log (with detailed information) and JBOSS_HOME/standalone/log/gc.log.0 (with brief summary of gc logging)
> ** I start standalone and stop standalone again
> ** JDK10 moves original gc.log to gc.log.1
> ** JDK10 keep original gc.log.0
> ** JDK10 creates new gc.log (with detailed information) and gc.log.2 (with brief summary of gc logging)
> ** Can this be changed by GC settings?
> * GC logs are much more verbose against jdk8 gc logs. Can this be fixed by some JDK10 gc settings? 
> This is follow up for WFCORE-3996



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