In the past few days customer has got a couple of core files from Java processes;
these crashes happened as the process was starting up.


JVM : 1.5.0_08-b03 - Server VM
O/s : Solaris 10 6/06 s10x_u2wos_09a X86



The hs_ files look like:

=====================================================
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# SIGSEGV (0xb) at pc=0xfeb11085, pid=4194, tid=8
#
# Java VM: Java HotSpot(TM) Server VM (1.5.0_08-b03 mixed mode)
# Problematic frame:
# V [libjvm.so+0x311085]
#

--------------- T H R E A D ---------------

Current thread (0x0819cb28): ConcurrentMarkSweepThread [id=8]

siginfo:si_signo=11, si_errno=0, si_code=1, si_addr=0x000000d0
======================================================




The hs_err files and the output of running pldd, pmap, pstack, and pargs
on the core files are available.

File Name : CBOE_GlobalServerCores.tar.gz
Location : /net/cores.central/cores/dir33/831472


Here are the contents of the tar file:

$ tar tvf CBOE_GlobalServerCores.tar
-rw-r--r-- 394/101 25000 Aug 3 08:22 2007 java.4194.1185861988.pargs
-rw-r--r-- 394/101 808 Aug 3 08:22 2007 java.4194.1185861988.pldd
-rw-r--r-- 394/101 17527 Aug 3 08:22 2007 java.4194.1185861988.pmap
-rw-r--r-- 394/101 239761 Aug 3 08:22 2007 java.4194.1185861988.pstack
-rw-r--r-- 394/101 25000 Aug 3 08:18 2007 java.8699.1186121030.pargs
-rw-r--r-- 394/101 808 Aug 3 08:18 2007 java.8699.1186121030.pldd
-rw-r--r-- 394/101 17020 Aug 3 08:18 2007 java.8699.1186121030.pmap
-rw-r--r-- 394/101 241732 Aug 3 08:18 2007 java.8699.1186121030.pstack
-rw-r--r-- 394/101 24358 Aug 3 08:24 2007 hs_err_pid4194.log
-rw-r--r-- 394/101 23846 Aug 3 08:11 2007 hs_err_pid8699.log


Customer wants it to be treated with high prioity.

And customer seeks for the below clarifications :

1. Do these crashes correspond to a known problem ?
2. Are they associated with parallel remark
3. Would it stop having these problems if customer migrates to JVM 1.6 ?

Need to know about detailed analysis and inputs.