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Date: Wed, 31 Jan 2007 11:55:05 -0800 (PST)
From: "Chris Elford (JIRA)" <jira@apache.org>
To: commits@harmony.apache.org
Subject: [jira] Created: (HARMONY-3104) Crash with moderate heap size (2GB)
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Crash with moderate heap size (2GB)
-----------------------------------

                 Key: HARMONY-3104
                 URL: https://issues.apache.org/jira/browse/HARMONY-3104
             Project: Harmony
          Issue Type: Bug
          Components: DRLVM
         Environment: x86_64 -- RedHat Enterprise Linux 4 - U4
4GB in system
            Reporter: Chris Elford


When running "java -Xms2g -Xmx2g hello", one receives a segmentation fault during startup.   On x86_64 (and Itanium), heaps up to 16-30GB are likely to be common on reasonably sized SMPs.

The segfault is in libharmony.so and the top of the stack looks like this:
#0  0x0000002a990dae09 in EncoderBase::encode_aux () from /opt/harmony-jre-r487452/bin/default/libharmonyvm.so
#1  0x0000002a990db478 in EncoderBase::encode ()   from /opt/harmony-jre-r487452/bin/default/libharmonyvm.so
#2  0x0000002a9906b95a in compile_gen_compile_me ()   from /opt/harmony-jre-r487452/bin/default/libharmonyvm.so
#3  0x0000002a9904f5f8 in Class::assign_offsets_to_methods ()   from /opt/harmony-jre-r487452/bin/default/libharmonyvm.so
#4  0x0000002a9904f93c in Class::prepare ()   from /opt/harmony-jre-r487452/bin/default/libharmonyvm.so
#5  0x0000002a9906109c in ClassLoader::LoadVerifyAndPrepareClass ()   from /opt/harmony-jre-r487452/bin/default/libharmonyvm.so

I am using the latest binary hre drop (which seems to be a month out  of date) 
Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
java version "1.5.0"
pre-alpha : not complete or compatible
svn = r487452, (Dec 15 2006), Linux/em64t/gcc 4.0.3, release build
http://incubator.apache.org/harmony

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