Long JVM Pauses after GC Log Rotation on Solaris (Doc ID 2110707.1)

Last updated on MARCH 31, 2023

Applies to:

Symptoms

On Solaris, Java SE 7 and 8 can experience extremely long pauses directly after GC log rotation.

Affects Java versions:

•      1.7.0_80 - 1.7.0_97
•      1.8.0_20 - 1.8.0_77

The problem can be reproduced with the following steps:

1. Start any Java process that creates many entries in /proc/self/map and uses GC log rotation.  To create a Java process with many entries in /proc/self/map, the application can have many threads and/or open many Jar files with a classloader.
2. Add -XX:+PrintGCStoppedTime to track safepoint pauses.
3. Trigger enough activity such that the GC log rotates.
4. Watch a long safepoint pause directly after log rotation. The problem should be easily noticeable with about 500-1000 entries in /proc/self/map.

Changes

Cause

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