JDK-8008546 : WRONG G1CONFIDENCEPERCENT RESULTS IN GUARANTEE(VARIANCE() > -1.0) FAILED
- Type: Bug
- Component: hotspot
- Sub-Component: gc
- Affected Version: 7u7
- Priority: P4
- Status: Closed
- Resolution: Fixed
- OS: linux
- CPU: x86
- Submitted: 2013-02-20
- Updated: 2015-01-13
- Resolved: 2013-02-24
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Resolved: Release in which this issue/RFE has been resolved.
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Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 7 | JDK 8 | Other |
|---|---|---|
7u40Fixed  |
8Fixed |
hs24Fixed |
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Description
Problem Statement
=================
If an out of range value was used with -XX:G1ConfidencePercent=N, e.g. 200,
JVM may crash with following guarantee. G1ConfidencePercent value should be
validated before starting VM.
# Internal Error (numberSeq.cpp:184), pid=7292, tid=2067221360
# guarantee(variance() > -1.0) failed: variance should be >= 0
Issue Clarification
===================
Crash
If an out of range value was used with -XX:G1ConfidencePercent=N, e.g.
200, JVM may crash with following guarantee.
# Internal Error (numberSeq.cpp:184), pid=7292, tid=2067221360
# guarantee(variance() > -1.0) failed: variance should be >= 0
How often have you seen the problem?
Almost always with -XX:G1ConfidencePercent=200
How reproducable is the problem?
Run a java program which keeps allocating memory with following options.
-XX:+UseG1GC -XX:G1ConfidencePercent=200
system configuration
====================
Full output from java -version
java version "1.7.0_07"
Java(TM) SE Runtime Environment (build 1.7.0_07-b10)
Java HotSpot(TM) Server VM (build 23.3-b01, mixed mode)
Comments
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