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From "Matt Sicker (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LOG4J2-1116) upgrade to log4j2 causes too frequent minor gc
Date Wed, 09 Mar 2016 15:34:40 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-1116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15187248#comment-15187248
] 

Matt Sicker commented on LOG4J2-1116:
-------------------------------------

Would it be worth re-inventing ThreadLocal to allow for cleanup on shutdown, or can this be
handled purely through the existing API? ThreadLocal contains no native code which does make
it re-implementable in Java, even if that sounds like a horrid idea.

> upgrade to log4j2 causes too frequent minor gc
> ----------------------------------------------
>
>                 Key: LOG4J2-1116
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1116
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.3
>         Environment: jdk1.6 
> slf4j 1.7.9
> log4j2.3
>            Reporter: Mingjiang Shi
>            Priority: Critical
>
> We used slf4j+log1.2 in our spring web application. Due to the log4j1.0 performance issue,
we upgrade it to log4j2. When it goes to production, it experienced very frequent minor gc
(once per second) even though the eden area is not full. For example, the eden area just occupied
10%, the minor gc also happens. The issue disappears when rolling back to log4j1.2. 
> Can anyone show some hints on diagnose this issue? Thanks!



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