ParNewGC Minor Collections Take Longer With Java SE 7 Relative To Java SE 6

(Doc ID 2043788.1)

Last updated on NOVEMBER 05, 2016

Applies to:

Java SE JDK and JRE - Version 7 to 7 [Release 7]
Information in this document applies to any platform.

Symptoms

ParNewGC is found to be considerably slower in Java SE 7 than in Java SE 6.  ParNewGC is used in combination with the 'Concurrent Low Pause Collector' (CMS).  It is enabled through the use of these flags:

 

Cause

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