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https://issues.apache.org/jira/browse/LOG4J2-1410?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Remko Popma updated LOG4J2-1410:
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Fix Version/s: (was: 2.8)
2.8.1
> Add new LiteTimeoutBlockingWaitStrategy for Async Loggers
> ---------------------------------------------------------
>
> Key: LOG4J2-1410
> URL: https://issues.apache.org/jira/browse/LOG4J2-1410
> Project: Log4j 2
> Issue Type: New Feature
> Components: Core
> Affects Versions: 2.6
> Reporter: Remko Popma
> Assignee: Remko Popma
> Fix For: 2.8.1
>
>
> Discussion on the Mechanical Sympathy mailing list [brought to
> light|https://groups.google.com/d/msg/mechanical-sympathy/klefjRqlpQE/0wpjUkE9AwAJ]
> an interesting aspect of using the Disruptor under light loads: if the
> background thread has no work to do because the queue is empty, it will
> block, and await a signal that more work has been put onto the queue.
> Sending this signal is done in the application thread when a new log event is
> enqueued. This is done by obtaining the shared Lock and calling
> Condition.signal(). Now, if multiple application threads try to do this
> signalling at the same time, one of them will be suspended by the OS. This
> may be costly, and unnecessary, because waking up the background thread twice
> is wasteful.
> The Disruptor contains the
> [LiteBlockingWaitStrategy|https://github.com/LMAX-Exchange/disruptor/blob/master/src/main/java/com/lmax/disruptor/LiteBlockingWaitStrategy.java]
> for this.
> Log4j uses the
> [TimeoutBlockingWaitStrategy|https://github.com/LMAX-Exchange/disruptor/blob/master/src/main/java/com/lmax/disruptor/TimeoutBlockingWaitStrategy.java]
> by default since we had a report of a deadlock with BlockingWaitStrategy on
> Solaris (LOG4J2-1221).
> This ticket proposes to create a custom wait strategy that combines
> LiteBlockingWaitStrategy with TimeoutBlockingWaitStrategy.
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