My Oracle Support Banner

[Java SE] GC is Extremely Slow Due to System Swap Activity (Doc ID 1262554.1)

Last updated on APRIL 15, 2024

Applies to:

Java SE JDK and JRE - Version 1.4.2 and later
Information in this document applies to any platform.

Symptoms

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

Changes

 

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document
Symptoms
Changes
Cause
Solution

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.