GC Is Extremely Slow Due to System CPU Being Overloaded (Doc ID 1570441.1)

Last updated on APRIL 09, 2017

Applies to:

Java Platform, Standard Edition - Version 1.3.1 and later
Information in this document applies to any platform.
***Checked for relevance on 28-OCT-2012***

Symptoms

Garbage Collection (GC) takes a very long time to complete.  During this time all application threads are paused and the application seems to hang.  If the Java option -XX:+PrintGCDetails is used to report the GC activity, the "real" time will be reported as being far greater than the "user" and "sys" times combined.

2993.705: [GC 2993.705: [ParNew: 448000K->64000K(448000K), 4.8754870 secs] 1972341K->1630130K(2496000K),
4.8756180 secs] [Times: user=0.47 sys=0.14, real=4.88 secs]

Cause

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