[jira] [Resolved] (LOG4J2-898) Format messages asynchronously

["Remko Popma (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LOG4J2-898?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Remko Popma resolved LOG4J2-898.
--------------------------------
    Resolution: Fixed

Fixed in master in commit e1b70f6e.

If system property {{log4j.format.msg.async}} is set to {{true}}, log4j will no longer call {{Message.getFormattedMessage()}} before passing the log event to the background thread.

Note that in practice I suspect a fix for LOG4J2-772 is needed to see a big(ger?) performance benefit. Patches welcome! :-)

Please verify and close.


> Format messages asynchronously
> ------------------------------
>
>                 Key: LOG4J2-898
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-898
>             Project: Log4j 2
>          Issue Type: Improvement
>    Affects Versions: 2.0.2, 2.1
>            Reporter: Steven Grossman
>            Assignee: Remko Popma
>             Fix For: 2.5
>
>
> Formatting a message can be an expensive operation (e.g. String.format) and it is undesirable for it to be done in the calling thread when using an async logger or appender.
> LOG4J2-763 moved this work to the calling thread.  Would you consider bringing back the previous behavior via a config/system property?



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