JVM Does Not Use LargePageSize Memory When G1 Garbage Collector is Used With A Large Heap (Doc ID 2121389.1)

Last updated on APRIL 05, 2016

Applies to:

Oracle Commerce Platform - Version 10.2.0.4 and later
Information in this document applies to any platform.

Symptoms

Environment:
Running Oracle Commerce on Weblogic.
The JDK version is java version "1.7.0_91"
Java(TM) SE Runtime Environment (build 1.7.0_91-b32)
Java HotSpot(TM) 64-Bit Server VM (build 24.91-b03, mixed mode)
Redhat 5.11 x86_64

Why does Java 7u91 does not use LargePageSize memory when G1 Garbage Collector is used with a Large Heap?

JVM with G1 (-XX:+UseG1GC) when heap memory size is between 6 gb and 12 gb, 'HugePages_Rsvd' does not get increased.

Cause

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