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https://issues.apache.org/jira/browse/LOG4J2-744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14076513#comment-14076513
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Matt Sicker commented on LOG4J2-744:
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In that case, I'd have to agree with Remko's analysis and defer this to a
performance test to see if instanceof is indeed fast enough to use. Tests in
JDK 1.6, 1.7, and 1.8 would be nice, but 1.6 is the important one here.
> Avoid unnecessary Clock calls when TimestampMessage is logged
> -------------------------------------------------------------
>
> Key: LOG4J2-744
> URL: https://issues.apache.org/jira/browse/LOG4J2-744
> Project: Log4j 2
> Issue Type: Improvement
> Reporter: Scott Harrington
> Priority: Minor
> Attachments: LOG4J2-744-test.patch, LOG4J2-744.patch
>
>
> The TimestampMessage interface was introduced in LOG4J2-53 and revised for
> AsyncLogger in LOG4J2-455.
> I've observed that Clock.currentTimeMillis is still called which should not
> be necessary.
> I have two patches, one which adds JUnit tests that demonstrate the
> unnecessary Clock calls, and one which fixes the issue for both AsyncLogger
> and "traditional" configurations.
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