OutOfMemoryError with xGb+16bytes

[Bartolomeo Nicolotti]

To whom it may concern.

we're using openjdk6 in this stack:

- Linux ubuntu 10.04 64bit
- Java
- Tomcat 5.5(JSP)
- axis2 web service

we're servicing 1000 request each day since march/2011 and we've had 2 strange
errors:

today:

# A fatal error has been detected by the Java Runtime Environment:
#
# java.lang.OutOfMemoryError: requested 2147483664 bytes for Chunk::new. Out of
swap space?
#
# Internal Error (allocation.cpp:215), pid=1509, tid=139713727981328
# Error: Chunk::new
#
# JRE version: 6.0_18-b18
# Java VM: OpenJDK 64-Bit Server VM (16.0-b13 mixed mode linux-amd64 )
# Derivative: IcedTea6 1.8
# Distribution: Ubuntu 10.04.1 LTS, package 6b18-1.8-4ubuntu3
# An error report file with more information is saved as:
# /home/sysop/hs_err_pid1509.log
#

on the 31/may/2010:

# A fatal error has been detected by the Java Runtime Environment:
#
# java.lang.OutOfMemoryError: requested 4294967312 bytes for Chunk::new. Out of
swap space?
#
# Internal Error (allocation.cpp:215), pid=1408, tid=139749761050384
# Error: Chunk::new
#
# JRE version: 6.0_18-b18
# Java VM: OpenJDK 64-Bit Server VM (16.0-b13 mixed mode linux-amd64 )
# Derivative: IcedTea6 1.8
# Distribution: Ubuntu 10.04.1 LTS, package 6b18-1.8-4ubuntu3
# An error report file with more information is saved as:
# /home/sysop/hs_err_pid1408.log
#
# If you would like to submit a bug report, please include
# instructions how to reproduce the bug and visit:
# https://bugs.launchpad.net/ubuntu/+source/openjdk-6/

the strange thing is that in both cases the requested memory is 16 bytes more
than 2^31 or 2^32

2147483664 bytes= 2'147'483'664 2GB + 16byte (2^31 = 2'147'483'648)
4294967312 bytes= 4'294'967'312 4GB + 16byte (2^32 = 4'294'967'296)

attaching the error reports

Could you please check what's wrong?

also posted on openjdk bugzilla

https://bugs.openjdk.java.net/show_bug.cgi?id=100190

Many thanks

Best reagards

Bartolomeo Nicolotti

[Bartolomeo Nicolotti (bart-nicolotti)]

Any news? Happened another time.

bye