[jira] [Updated] (LOG4J2-869) Monitor contention at org.apache.logging.log4j.core.util.Loader.*

[Lucas Pouzac (JIRA)]

[ https://issues.apache.org/jira/browse/LOG4J2-869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lucas Pouzac updated LOG4J2-869:
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Attachment: monitor_contention_log4j.png

Monitor contention at org.apache.logging.log4j.core.util.Loader.*
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Key: LOG4J2-869
URL: https://issues.apache.org/jira/browse/LOG4J2-869
Project: Log4j 2
Issue Type: Improvement
Components: Core
Affects Versions: 2.0.1, 2.0.2, 2.1
Reporter: Lucas Pouzac
Labels: concurrency, performance
Fix For: 2.0.2, 2.1
Attachments: monitor_contention_log4j.png
Loader.initializeClass() / Loader.loadClass() indirectly calls Class.forName0(), which calls into JRE lib method causing monitor contention. See screen shot
Fix by caching values returned by Class.forName() in a static ConcurrentMap

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[Lucas Pouzac (JIRA)]

Lucas Pouzac created LOG4J2-869:
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Summary: Monitor contention at org.apache.logging.log4j.core.util.Loader.*
Key: LOG4J2-869
URL: https://issues.apache.org/jira/browse/LOG4J2-869
Project: Log4j 2
Issue Type: Improvement
Components: Core
Affects Versions: 2.0.2, 2.0.1, 2.1
Reporter: Lucas Pouzac
Fix For: 2.1, 2.0.2
Attachments: monitor_contention_log4j.png

Loader.initializeClass() / Loader.loadClass() indirectly calls Class.forName0(), which calls into JRE lib method causing monitor contention. See screen shot

Fix by caching values returned by Class.forName() in a static ConcurrentMap



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[Remko Popma (JIRA)]

[ https://issues.apache.org/jira/browse/LOG4J2-869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Remko Popma updated LOG4J2-869:
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Fix Version/s: (was: 2.0.2)
(was: 2.1)

Monitor contention at org.apache.logging.log4j.core.util.Loader.*
-----------------------------------------------------------------
Key: LOG4J2-869
URL: https://issues.apache.org/jira/browse/LOG4J2-869
Project: Log4j 2
Issue Type: Improvement
Components: Core
Affects Versions: 2.0.1, 2.0.2, 2.1
Reporter: Lucas Pouzac
Labels: concurrency, performance
Attachments: monitor_contention_log4j.png
Loader.initializeClass() / Loader.loadClass() indirectly calls Class.forName0(), which calls into JRE lib method causing monitor contention. See screen shot
Fix by caching values returned by Class.forName() in a static ConcurrentMap

...

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