Signal 11 may be a hardware fault - run a memory checker. For the record, here are some links from my bookmarks (apologies if the embedded HTML zaps anybody's client):
Easy-to-use (user space) tool: <A HREF="http://www.qcc.sk.ca/~charlesc/software/memtester/";>Charles Cazabon's memtest</A> Excellent developerWorks article: <A HREF="http://www-106.ibm.com/developerworks/linux/library/l-hw1/index.html?dwzone=linux?open&l=252,t=gr,p=lxhwstabgd1";>developerWorks Linux Linux hardware stability guide, Part 1</A> A CPU burner - to check the CPU under stress: <A HREF="http://users.bigpond.net.au/cpuburn/";>CPU Burn-in Homepage</A> Other stuff: <A HREF="http://www.linuxdoc.org/HOWTO/Kernel-HOWTO-2.html";>The Linux Kernel HOWTO Quick Steps - Kernel Compile</A> <A HREF="http://panic.et.tudelft.nl/~costar/memmxtest/";>MemMXtest - A Memory Testing Environment for MMX PCs</A> <A HREF="http://www.teresaudio.com/memtest86/#commands";>Memtest86 - Memory Diagnostic Page</A> <A HREF="http://www.simmtester.com/default.asp";>CSTInc, The Online Memory Tester and Testing Solution Company.</A> <A HREF="http://librenix.com/?inode=1132";>Linux Linux hardware stability guide, part 2 [Librenix.com]</A> <A HREF="http://www.netroedge.com/~lm78/";>Linux System Hardware Monitoring</A> Regards, Thomas. At 21:41 13/11/2001 -0800, Hong ZHou wrote: >Hi, Dear ALL: > >I have two problems that need great helps. > >1. On my Redhat Linux computer, when I run blackdown-1.3.1-FCS java, I >got the JVM crashes time to time at about 30% frequences. The error >message says: > >******************************************************************************************************* >Unexpected Signal : 11 occurred at PC=0x40152522 >Function name=JVM_IHashCode >Library=/usr/local/j2sdk1.3.1/jre/lib/i386/client/libjvm.so > >Current Java thread: > at java.lang.System.identityHashCode(Native Method) > at > java.io.ObjectOutputStream$HandleTable.findWireOffset(ObjectOutputStream.java:2344) > at > java.io.ObjectOutputStream.serializeNullAndRepeat(ObjectOutputStream.java:1257) > at > java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:281) > at > java.io.ObjectOutputStream.outputClassFields(ObjectOutputStream.java:1827) > at > java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:480) > at java.util.Hashtable.writeObject(Hashtable.java:747) > at java.lang.reflect.Method.invoke(Native Method) > at > java.io.ObjectOutputStream.invokeObjectWriter(ObjectOutputStream.java:1864) > at > java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1210) > at > java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366) > at > java.io.ObjectOutputStream.outputClassFields(ObjectOutputStream.java:1827) > at > java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:480) > at > java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1214) > at > java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366) > at com.anabas.recorderServer.ZipSaver.saveMessage(ZipSaver.java:174) > at > >com.anabas.recorderServer.Recorder$MeetingMessageListener.onMessage(Recorder.java:235) > at > >com.anabas.sonicmq.SonicMQMessageListenerAdapter.onMessage(SonicMQMessageListenerAdapter.java:32) > at com.anabas.sonicmq.Receiver.onMessage(GMS_SubscriberImpl.java:194) > at progress.message.jclient.Session.dc_(Unknown Source) > at progress.message.jclient.TopicSession.run(Unknown Source) > at progress.message.jclient.co.run(Unknown Source) > >Dynamic libraries: >08048000-0804c000 r-xp 00000000 08:01 >1006738 /usr/local/j2sdk1.3.1/bin/i386/native_threads/java >0804c000-0804d000 rw-p 00003000 08:01 >1006738 /usr/local/j2sdk1.3.1/bin/i386/native_threads/java >40000000-40016000 r-xp 00000000 08:01 389379 /lib/ld-2.1.92.so >40016000-40017000 rw-p 00015000 08:01 389379 /lib/ld-2.1.92.so >40018000-40019000 r--p 00000000 08:01 >908554 /usr/lib/locale/en_US/LC_IDENTIFICATION >40019000-4001a000 r--p 00000000 08:01 >908555 /usr/lib/locale/en_US/LC_MEASUREMENT >4001a000-4001b000 r--p 00000000 08:01 >908560 /usr/lib/locale/en_US/LC_TELEPHONE >4001b000-4001c000 r--p 00000000 08:01 >908551 /usr/lib/locale/en_US/LC_ADDRESS >4001c000-4002a000 r-xp 00000000 08:01 389418 /lib/libpthread-0.9.so >4002a000-40032000 rw-p 0000d000 08:01 389418 /lib/libpthread-0.9.so >40032000-4003d000 r-xp 00000000 08:01 >243797 /usr/local/j2sdk1.3.1/jre/lib/i386/native_threads/libhpi.so >4003d000-4003e000 rw-p 0000a000 08:01 >243797 /usr/local/j2sdk1.3.1/jre/lib/i386/native_threads/libhpi.so >4003e000-40301000 r-xp 00000000 08:01 >617269 /usr/local/j2sdk1.3.1/jre/lib/i386/client/libjvm.so >40301000-40318000 rw-p 002c2000 08:01 >617269 /usr/local/j2sdk1.3.1/jre/lib/i386/client/libjvm.so >40330000-40332000 r-xp 00000000 08:01 389390 /lib/libdl-2.1.92.so >40332000-40333000 rw-p 00001000 08:01 389390 /lib/libdl-2.1.92.so >40333000-4044e000 r-xp 00000000 08:01 389386 /lib/libc-2.1.92.so >4044e000-40454000 rw-p 0011a000 08:01 389386 /lib/libc-2.1.92.so >40458000-40459000 r-xp 00000000 08:01 >389381 /lib/libBrokenLocale-2.1.92.so >40459000-4045a000 rw-p 00000000 08:01 >389381 /lib/libBrokenLocale-2.1.92.so >4045b000-4046e000 r-xp 00000000 08:01 389395 /lib/libnsl-2.1.92.so >4046e000-40470000 rw-p 00012000 08:01 389395 /lib/libnsl-2.1.92.so >40472000-40491000 r-xp 00000000 08:01 389392 /lib/libm-2.1.92.so >40491000-40492000 rw-p 0001e000 08:01 389392 /lib/libm-2.1.92.so >40492000-404a4000 r-xp 00000000 08:01 >617272 /usr/local/j2sdk1.3.1/jre/lib/i386/libverify.so >404a4000-404a6000 rw-p 00011000 08:01 >617272 /usr/local/j2sdk1.3.1/jre/lib/i386/libverify.so >404a6000-404c9000 r-xp 00000000 08:01 >617273 /usr/local/j2sdk1.3.1/jre/lib/i386/libjava.so >404c9000-404cb000 rw-p 00022000 08:01 >617273 /usr/local/j2sdk1.3.1/jre/lib/i386/libjava.so >404cc000-404e1000 r-xp 00000000 08:01 >617274 /usr/local/j2sdk1.3.1/jre/lib/i386/libzip.so >404e1000-404e4000 rw-p 00014000 08:01 >617274 /usr/local/j2sdk1.3.1/jre/lib/i386/libzip.so >404e4000-411fd000 r--s 00000000 08:01 >617303 /usr/local/j2sdk1.3.1/jre/lib/rt.jar >4122a000-414cf000 r--s 00000000 08:01 >617304 /usr/local/j2sdk1.3.1/jre/lib/i18n.jar >414cf000-414e5000 r--s 00000000 08:01 >617291 /usr/local/j2sdk1.3.1/jre/lib/sunrsasign.jar >4358d000-4358e000 r--p 00000000 08:01 908557 /usr/lib/locale/en_US/LC_NAME >4358e000-4358f000 r--p 00000000 08:01 >908559 /usr/lib/locale/en_US/LC_PAPER >4358f000-43590000 r--p 00000000 08:01 >973447 /usr/lib/locale/en_US/LC_MESSAGES/SYS_LC_MESSAGES >495ef000-495fb000 r--p 00000000 08:01 >908553 /usr/lib/locale/en_US/LC_CTYPE >495fb000-495fc000 r--p 00000000 08:01 >908556 /usr/lib/locale/en_US/LC_MONETARY >495fc000-49602000 r--p 00000000 08:01 >908552 /usr/lib/locale/en_US/LC_COLLATE >49602000-49603000 r--p 00000000 08:01 908561 /usr/lib/locale/en_US/LC_TIME >49603000-49604000 r--p 00000000 08:01 >908558 /usr/lib/locale/en_US/LC_NUMERIC >49604000-49606000 r--s 00000000 08:01 >925063 /opt/anabas/classtime/sharedlet_repository/statsharedlet.jar >49608000-49612000 r-xp 00000000 08:01 389409 /lib/libnss_files-2.1.92.so >49612000-49613000 rw-p 00009000 08:01 389409 /lib/libnss_files-2.1.92.so >4967f000-496ae000 r--s 00000000 08:01 >243698 /opt/anabas/classtime/lib/anabasutil.jar >496ae000-49762000 r--s 00000000 08:01 >243699 /opt/anabas/classtime/lib/gxo.jar >49762000-497ac000 r--s 00000000 08:01 >243700 /opt/anabas/classtime/lib/sharedlet.jar >497ac000-497b7000 r--s 00000000 08:01 >243701 /opt/anabas/classtime/lib/sharedlet_server.jar >497b7000-497c0000 r-xp 00000000 08:01 >617277 /usr/local/j2sdk1.3.1/jre/lib/i386/libnet.so >497c0000-497c1000 rw-p 00008000 08:01 >617277 /usr/local/j2sdk1.3.1/jre/lib/i386/libnet.so >497c1000-497d2000 r--s 00000000 08:01 >925059 /opt/anabas/classtime/sharedlet_repository/Auditorium.jar >497d2000-497e4000 r--s 00000000 08:01 >925060 /opt/anabas/classtime/sharedlet_repository/Communication.jar >497e4000-497ed000 r--s 00000000 08:01 >925061 /opt/anabas/classtime/sharedlet_repository/Poll.jar >497f1000-497f8000 r-xp 00000000 08:01 632834 /usr/X11R6/lib/libXp.so.6.2 >497f8000-497f9000 rw-p 00006000 08:01 632834 /usr/X11R6/lib/libXp.so.6.2 >497f9000-497fd000 r-xp 00000000 08:01 632840 /usr/X11R6/lib/libXtst.so.6.1 >497fd000-497ff000 rw-p 00003000 08:01 632840 /usr/X11R6/lib/libXtst.so.6.1 >49900000-49921000 r--s 00000000 08:01 >925062 /opt/anabas/classtime/sharedlet_repository/Recorder.jar >49921000-49935000 r--s 00000000 08:01 >925064 /opt/anabas/classtime/sharedlet_repository/Whiteboard.jar >49935000-49953000 r--s 00000000 08:01 >925261 /opt/anabas/classtime/sharedlet_repository/RecorderServer.jar >49953000-49c45000 r-xp 00000000 08:01 >617281 /usr/local/j2sdk1.3.1/jre/lib/i386/libawt.so >49c45000-49c55000 rw-p 002f1000 08:01 >617281 /usr/local/j2sdk1.3.1/jre/lib/i386/libawt.so >49c6b000-49cb4000 r-xp 00000000 08:01 >617280 /usr/local/j2sdk1.3.1/jre/lib/i386/libmlib_image.so >49cb4000-49cb6000 rw-p 00048000 08:01 >617280 /usr/local/j2sdk1.3.1/jre/lib/i386/libmlib_image.so >49cb6000-49cfe000 r-xp 00000000 08:01 632838 /usr/X11R6/lib/libXt.so.6.0 >49cfe000-49d02000 rw-p 00047000 08:01 632838 /usr/X11R6/lib/libXt.so.6.0 >49d03000-49d0b000 r-xp 00000000 08:01 632816 /usr/X11R6/lib/libSM.so.6.0 >49d0b000-49d0c000 rw-p 00007000 08:01 632816 /usr/X11R6/lib/libSM.so.6.0 >49d0c000-49d20000 r-xp 00000000 08:01 632812 /usr/X11R6/lib/libICE.so.6.3 >49d20000-49d21000 rw-p 00013000 08:01 632812 /usr/X11R6/lib/libICE.so.6.3 >49d23000-49d30000 r-xp 00000000 08:01 632826 /usr/X11R6/lib/libXext.so.6.4 >49d30000-49d31000 rw-p 0000c000 08:01 632826 /usr/X11R6/lib/libXext.so.6.4 >49d31000-49dfa000 r-xp 00000000 08:01 632818 /usr/X11R6/lib/libX11.so.6.1 >49dfa000-49dfe000 rw-p 000c8000 08:01 632818 /usr/X11R6/lib/libX11.so.6.1 > >Local Time = Wed Nov 14 08:52:25 2001 >Elapsed Time = 269 ># ># HotSpot Virtual Machine Error : 11 ># Error ID : 4F530E43505002CC ># Please report this error at ># ><http://java.sun.com/cgi-bin/bugreport.cgi>http://java.sun.com/cgi-bin/bugreport.cgi ># ># Java VM: Java HotSpot(TM) Client VM (Blackdown-1.3.1-FCS mixed mode) ># > >********************************************************************************************************************** > >The problem is traced to the native method identityHashCode() in class System. > >Here are some of my system config info: > > 1)The output of the execution of "uname -a" is: Linux > Testing 2.2.16-22smp #1 SMP Tue Aug 22 16:39:21 EDT 2000 i686 unknown > > 2)using libc6 > > 3)ld-linux.so.2 (ELF) => /lib/ld-linux.so.2 > > > >2. The second question I hope to ask is that on this linux computer, >Java green thread is not supported. Here are the top part of the core >dump got from executing "java -green" (filtered by command "strings"): > >CORE >CORE >java >/usr/local/j2sdk1.3.1/bin/i386/green_threads/java -classic >CORE >java >_threads >CORE >Error: could not find Java 2 Runtime Environment. >Error: no `%s' JVM at `%s'. >Error: could not find a JVM. >java >CLASSPATH >Could not create the Java virtual machine. >%ld micro seconds to InitializeJVM >Main-Class is '%s' >Apps' argc is %d > argv[%2d] = '%s' >Failed to load Main-Class manifest attribute from >([Ljava/lang/String;)V >.............. > > > >Can somebody there help me out on these two problems? > > >Thanks a lot. > > >Hong ZHou ---------------------------------------------------------------------- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
