Extremely High CPU After Upgrading To IM10 From IM 9

(Doc ID 2226022.1)

Last updated on JULY 16, 2017

Applies to:

Oracle Communications Instant Messaging Server - Version 9.0.1.4.0 and later
Information in this document applies to any platform.

Symptoms

Observing extremely high CPU after upgrading to IM10 from IM 9; at times over 50%:


CURRENT JAVA SETTINGS
-----------------------
-d64 -Xms22528m -XX:+DisableExplicitGC -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Xloggc:/gcs/app/mail/im/default/log/xmppgc.log -XX:+PrintGCDateStamps -XX:+UseG1GC -DapplePluginProperties=/opt/sun/comms/im/config/apple_plugin_properties.properties -DI3_ENV=PROD-HTTPS -DI3_DC=NC

java -version
java version "1.7.0_111"
Java(TM) SE Runtime Environment (build 1.7.0_111-b13)
Java HotSpot(TM) Server VM (build 24.111-b13, mixed mode)




Changes

Upgraded IM from version 9u5 to 10u1.

Cause

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