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https://issues.apache.org/jira/browse/LOG4J2-2880?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ralph Goers resolved LOG4J2-2880.
---------------------------------
Fix Version/s: 2.14.0
Resolution: Fixed
I can't say whether the JDK has a problem or not, but after running the
benchmarks I believe Log4j has done all it can. Please verify and close.
> High CPU consumption using StackWalker
> --------------------------------------
>
> Key: LOG4J2-2880
> URL: https://issues.apache.org/jira/browse/LOG4J2-2880
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.11.1, 2.11.2, 2.12.0, 2.12.1, 2.13.0, 2.13.1, 2.13.2,
> 2.13.3
> Environment: log4j version: 2.12.1
> JDK version: OpenJDK 11.0.6
> Reporter: Hash Jang
> Priority: Major
> Fix For: 2.14.0
>
> Attachments: image-2020-06-28-02-42-12-987.png, log4j2.xml
>
>
> While using OpenJDK 11, there are possibility cause severe CPU consumption
> because of JDK bug in using StackWalker.
>
> [Application on JDK11 consume 100% CPU after a few hours of
> uptime|[https://bugs.openjdk.java.net/browse/JDK-8222942]]
>
> And it happened serveral times on our production environment.
>
> !image-2020-06-28-02-42-12-987.png!
>
> Stack trace Is:
> "reactor-http-epoll-1" #75 daemon prio=5 os_prio=0 cpu=25100145.64ms
> elapsed=306507.26s tid=0x0000556eddcbd000 nid=0x61 runnable
> [0x00007f8605443000]"reactor-http-epoll-2" #75 daemon prio=5 os_prio=0
> cpu=25100145.64ms elapsed=306507.26s tid=0x0000556eddcbd000 nid=0x61 runnable
> [0x00007f8605443000] java.lang.Thread.State: RUNNABLE at
> java.lang.StackStreamFactory$AbstractStackWalker.callStackWalk(java.base@11.0.6/Native
> Method) at
> java.lang.StackStreamFactory$AbstractStackWalker.beginStackWalk(java.base@11.0.6/StackStreamFactory.java:370)
> at
> java.lang.StackStreamFactory$AbstractStackWalker.walk(java.base@11.0.6/StackStreamFactory.java:243)
> at java.lang.StackWalker.walk(java.base@11.0.6/StackWalker.java:498) at
> org.apache.logging.log4j.util.StackLocator.calcLocation(StackLocator.java:81)
> at
> org.apache.logging.log4j.util.StackLocatorUtil.calcLocation(StackLocatorUtil.java:76)
> at
> org.apache.logging.log4j.spi.AbstractLogger.getLocation(AbstractLogger.java:2201)
> at
> org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2144)
> at
> org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2127)
> at
> org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:2020)
> at
> org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1891)
> at org.apache.logging.log4j.spi.AbstractLogger.info(AbstractLogger.java:1436)
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