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High-CPU usage by JVMs on Pega 7.1.8



CPU utilization on the host supporting the Java Virtual Machine (JVM) jumps to 100% at random. As a result, the JVM performance is significantly or negatively impaired. Pega operations essentially freeze. No other processes are running on the host supporting the JVM, and Pega D-node operations are not running.

Error Messages

WebContainer : 37" Id=160192 in RUNNABLE
BlockedCount : 7, BlockedTime : -1, WaitedCount : 223049, WaitedTime : -1
    at java.util.HashMap.findNonNullKeyEntry(
    at java.util.HashMap.putImpl(
    at java.util.HashMap.put(

which corresponds to the auto-generated Java:

public static String[] getRuleSetForUnqualifiedVersion() { return new String[] { oTraceInfo_0.getRuleSetName(), oTraceInfo_0.getRuleSetVersion() };}
 private static final com.pega.pegarules.priv.tracer.RuleTraceInfo oTraceInfo_0 = new com.pega.pegarules.priv.tracer.RuleTraceInfo("RULE-PARSE-XML <CLASSNAME> PYANYNS!PYANYNAME #<DATETIME> GMT", "<CLASSNAME> ProductArrangementIdentifier pyAnyNS pyAnyName", "<CLASSNAME>", "01-01-01", "<DATETIME> GMT");

Steps to Reproduce

Execute Connect-SOAP operations.

Note: This issue is intermittant, and does not occur everytime Connect-SOAP operations are executed.

Root Cause

An issue in the auto-generated Java.


Apply HFix-25859.

Published April 13, 2016 - Updated October 8, 2020

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