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From "Remko Popma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LOG4J2-1116) Web app-friendly thread locals for gc-free logging (was: upgrade to log4j2 causes too frequent minor gc)
Date Mon, 04 Apr 2016 00:05:25 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-1116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15223558#comment-15223558
] 

Remko Popma commented on LOG4J2-1116:
-------------------------------------

The current docs for garbage-free logging (LOG4J2-1297) assume the web-friendly ThreadLocals
won't be ready before the next release, but of course I'd be happy to change that.  

I haven't looked at this for a while. Can you remind me what is still remaining?

> Web app-friendly thread locals for gc-free logging (was: 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
>            Assignee: Ralph Goers
>            Priority: Critical
>             Fix For: 2.6
>
>         Attachments: Log4jThreadLocal.java, Log4jThreadLocal.java
>
>
> 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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