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https://issues.apache.org/jira/browse/LOG4J2-3498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17532219#comment-17532219
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Gary D. Gregory commented on LOG4J2-3498:
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It looks like your project uses Java 11 so the JRE should pickup nanos for
Instant instances. This could be some weird combination of OS/JVM.
> Timestamp lacks micro and nano second precision on linux
> --------------------------------------------------------
>
> Key: LOG4J2-3498
> URL: https://issues.apache.org/jira/browse/LOG4J2-3498
> Project: Log4j 2
> Issue Type: Bug
> Reporter: Benjamin Tanguay
> Priority: Minor
>
> Generating a timestamp with micro and nano seconds defined fails when the
> operating system is linux. Instead of having the required precision, the log
> pads the micro and nano seconds with zeros. Testing it between some
> developpers, the code works properly on Windows and Mac and only fails on
> Linux machines.
> Our team has tested this internally and it seems that the problem is linked
> to a bad interaction between Linux and the library. We've tested with
> different JDK versions and vendors and the problem remained the same. The
> problem also works in the same way whether we use a JsonLayout or a
> PatternLayout to output the timestamp in the log.
>
> {*}Expected{*}:
> A timestamp with the form: "timestamp":"2022-05-04T17:53:43.914{*}123456{*}Z"
> {*}Actual{*}:
> A timestamp with the form: "timestamp":"2022-05-04T17:53:43.914{*}000000{*}Z"
>
> I created a small project to reproduce the issue. Notice the script demo.sh
> that allows you to build an alpine image, execute the code in docker and
> output the log in the console.
> [https://github.com/BenjaminTanguay/log4j-low-timestamp-precision-linux-demo]
>
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