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https://issues.apache.org/jira/browse/LOG4J2-163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13586884#comment-13586884
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Ralph Goers commented on LOG4J2-163:
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You found a bug. I don't actually use Java 5 to compile - I use Java 6 or 7 so
that code compiles fine. However, since the code is compiled for a target of
Java 5 and the constructor checks to see if the method exists it should run
fine in Java 5. I suspect that I should change the "compile source" setting in
the parent pom to 1.6 instead of 1.5.
> Create asynchronous Logger for low-latency logging
> --------------------------------------------------
>
> Key: LOG4J2-163
> URL: https://issues.apache.org/jira/browse/LOG4J2-163
> Project: Log4j 2
> Issue Type: Improvement
> Affects Versions: 2.0-beta4
> Reporter: Remko Popma
> Attachments: FastLog4j-v2-for-beta4.zip, FastLog4j-v3-for-beta4.zip,
> FastLog4j-v4-for-beta4.zip
>
>
> One of the main considerations for selecting a logging library is
> performance, specifically, how long it takes for a call to Logger.log to
> return. (See the comments of LOG4J-151 for a discussion of latency versus
> application throughput and logging throughput.)
> I believe it is possible to improve this performance by an order of magnitude
> by having an asynchronous Logger implementation that hands off the work to a
> separate thread as early as possible. The disk I/O would be done in this
> separate thread.
> AsynchAppender is not a good match for these requirements, as with that
> approach (a) the logging call still needs to flow down the hierarchy to the
> appender, doing synchronization and creating objects at various points on the
> way, and (b) when serializing the LogEvent, the getSource() method is always
> called, which is expensive.
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