[LOG4J2-2880] High CPU consumption using StackWalker

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.11.1, 2.11.2, 2.12.0, 2.12.1, 2.13.0, 2.13.1, 2.13.2, 2.13.3
• Fix Version/s: 2.14.0
• Component/s: Core

Environment

log4j version: 2.12.1

JDK version: OpenJDK 11.0.6

• Assignee: Unassigned
• Reporter: Hash Jang
• Created: 28/Jun/20 02:44
• Updated: 31/Jul/20 04:23
• Resolved: 31/Jul/20 04:23

Description

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.

 

 

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)

Issue Links

• relates to: LOG4J2-2792 Performance issue in log4j 2.12.1 and log4j 2.13.0