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Tomcat keeps getting hosed

tommycat1313
Champ in-the-making
Champ in-the-making
Hey -

I'm running Alfresco on a CentOS 4.1 platform and it works quite well except for one thing. About two or three times a day I have to restart Tomcat. It is generating an error log (below). Anything JAVA means nothing to me so I was hoping someone might have some insight.

For what it's worth there doesn't seem to be a specific set of user behavior which causes this. It just randomly decides to crash.

TIA

-TC


—-
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  SIGSEGV (0xb) at pc=0xb79f8cd1, pid=10214, tid=2112367536
#
# Java VM: Java HotSpot(TM) Server VM (1.5.0_06-b05 mixed mode)
# Problematic frame:
# V  [libjvm.so+0x3c9cd1]
#

—————  T H R E A D  —————

Current thread (0x080f2d48):  JavaThread "CompilerThread0" daemon [_thread_in_native, id=10230]

siginfo:si_signo=11, si_errno=0, si_code=1, si_addr=0x00000000

Registers:
EAX=0x00000000, EBX=0xb7bda7f0, ECX=0x7de80ed0, EDX=0x7cf9e09c
ESP=0x7de80e44, EBP=0x7de80e68, ESI=0x7ddc4ec0, EDI=0x7de80ed0
EIP=0xb79f8cd1, CR2=0x00000000, EFLAGS=0x00010216

Top of Stack: (sp=0x7de80e44)
0x7de80e44:   7de81480 7de81490 b79f8c16 7d2df7ec
0x7de80e54:   7d2df80c 7de80e88 b7bda7f0 7ddc4ec0
0x7de80e64:   7ddc4e7c 7de80e98 b79f8d75 7ddc5554
0x7de80e74:   7cf9e09c 7ddc5554 7de80ed0 7ddc55b8
0x7de80e84:   7ddc5c5c 7ddc4e7c b7bda7f0 7ddc5554
0x7de80e94:   00000000 7de80ef8 b79f9258 7ddc5554
0x7de80ea4:   7ddc4ec0 7ddc5554 7de80ed0 ffffffff
0x7de80eb4:   7ddc61f8 7de80ef8 b7a7dbf1 7ddc5c5c

Instructions: (pc=0xb79f8cd1)
0xb79f8cc1:   10 eb de 31 c0 eb 8e 8b 42 04 83 ec 0c 8b 40 08
0xb79f8cd1:   8b 08 50 ff 51 28 83 c4 10 e9 48 ff ff ff 90 55

Stack: [0x7de02000,0x7de83000),  sp=0x7de80e44,  free space=507k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x3c9cd1]
V  [libjvm.so+0x3c9d75]
V  [libjvm.so+0x3ca258]
V  [libjvm.so+0x4511fd]
V  [libjvm.so+0x450e90]
V  [libjvm.so+0x1a11c0]
V  [libjvm.so+0x19e432]
V  [libjvm.so+0x1474b3]
V  [libjvm.so+0x1a6929]
V  [libjvm.so+0x1a6281]
V  [libjvm.so+0x4c8366]
V  [libjvm.so+0x4c2ba3]
V  [libjvm.so+0x424338]
C  [libpthread.so.0+0x5371]


Current CompileTask:
opto:1793      org.apache.lucene.index.IndexReader$1.doBody()Ljava/lang/Object; (99 bytes)


—————  P R O C E S S  —————

Java Threads: ( => current thread )
  0x08274420 JavaThread "File Reaper" daemon [_thread_blocked, id=10319]
  0x08ced970 JavaThread "TP-Monitor" daemon [_thread_blocked, id=10311]
  0x08cecb48 JavaThread "TP-Processor4" daemon [_thread_in_native, id=10310]
  0x08a56620 JavaThread "TP-Processor3" daemon [_thread_blocked, id=10309]
  0x08691090 JavaThread "TP-Processor2" daemon [_thread_blocked, id=10308]
  0x08690dc8 JavaThread "TP-Processor1" daemon [_thread_blocked, id=10307]
  0x0823f8d8 JavaThread "http-8080-Monitor" [_thread_blocked, id=10306]
  0x0823e9f0 JavaThread "http-8080-Processor25" daemon [_thread_blocked, id=10305]
  0x08d04ad0 JavaThread "http-8080-Processor24" daemon [_thread_blocked, id=10304]
  0x08d03be8 JavaThread "http-8080-Processor23" daemon [_thread_in_native, id=10303]
  0x08d02d00 JavaThread "http-8080-Processor22" daemon [_thread_blocked, id=10302]
  0x08a7ce08 JavaThread "http-8080-Processor21" daemon [_thread_in_Java, id=10301]
  0x08a7bf70 JavaThread "http-8080-Processor20" daemon [_thread_blocked, id=10300]
  0x08781718 JavaThread "http-8080-Processor19" daemon [_thread_blocked, id=10299]
  0x08780830 JavaThread "http-8080-Processor18" daemon [_thread_blocked, id=10298]
  0x0877f948 JavaThread "http-8080-Processor17" daemon [_thread_blocked, id=10297]
  0x081501d8 JavaThread "http-8080-Processor16" daemon [_thread_blocked, id=10296]
  0x0814f2f0 JavaThread "http-8080-Processor15" daemon [_thread_blocked, id=10295]
  0x08464fa0 JavaThread "http-8080-Processor14" daemon [_thread_blocked, id=10294]
  0x08464110 JavaThread "http-8080-Processor13" daemon [_thread_blocked, id=10293]
  0x08918040 JavaThread "http-8080-Processor12" daemon [_thread_blocked, id=10292]
  0x08a5ad70 JavaThread "http-8080-Processor11" daemon [_thread_blocked, id=10291]
  0x08a59f98 JavaThread "http-8080-Processor10" daemon [_thread_blocked, id=10290]
  0x08b0a778 JavaThread "http-8080-Processor9" daemon [_thread_blocked, id=10289]
  0x08b09ae8 JavaThread "http-8080-Processor8" daemon [_thread_blocked, id=10288]
  0x088130f8 JavaThread "http-8080-Processor7" daemon [_thread_blocked, id=10287]
  0x08691298 JavaThread "http-8080-Processor6" daemon [_thread_blocked, id=10286]
  0x091f1128 JavaThread "http-8080-Processor5" daemon [_thread_blocked, id=10285]
  0x08a276d8 JavaThread "http-8080-Processor4" daemon [_thread_blocked, id=10284]
  0x0893d9c8 JavaThread "http-8080-Processor3" daemon [_thread_blocked, id=10283]
  0x087412b0 JavaThread "http-8080-Processor2" daemon [_thread_blocked, id=10282]
  0x0893e448 JavaThread "http-8080-Processor1" daemon [_thread_blocked, id=10281]
  0x084294f0 JavaThread "ContainerBackgroundProcessor[StandardEngine[Catalina]]" daemon [_thread_blocked, id=10280]
  0x08a26f40 JavaThread "DefaultScheduler_QuartzSchedulerThread" [_thread_blocked, id=10278]
  0x087785f8 JavaThread "DefaultScheduler_Worker-9" [_thread_blocked, id=10277]
  0x08777708 JavaThread "DefaultScheduler_Worker-8" [_thread_blocked, id=10276]
  0x080dfb68 JavaThread "DefaultScheduler_Worker-7" [_thread_blocked, id=10275]
  0x080decb8 JavaThread "DefaultScheduler_Worker-6" [_thread_blocked, id=10274]
  0x080dde08 JavaThread "DefaultScheduler_Worker-5" [_thread_blocked, id=10273]
  0x0945e8d8 JavaThread "DefaultScheduler_Worker-4" [_thread_blocked, id=10272]
  0x0945d6d0 JavaThread "DefaultScheduler_Worker-3" [_thread_blocked, id=10271]
  0x08287c30 JavaThread "DefaultScheduler_Worker-2" [_thread_blocked, id=10270]
  0x0872f060 JavaThread "DefaultScheduler_Worker-1" [_thread_blocked, id=10269]
  0x089446f0 JavaThread "DefaultScheduler_Worker-0" [_thread_blocked, id=10268]
  0x7ce3b1a8 JavaThread "Store webservice.UserQuerySessionCache Expiry Thread" daemon [_thread_blocked, id=10266]
  0x7b7c02f8 JavaThread "Store webservice.UserQuerySessionCache Spool Thread" daemon [_thread_blocked, id=10265]
  0x7d340240 JavaThread "Store webservice.QuerySessionCache Expiry Thread" daemon [_thread_blocked, id=10264]
  0x08240c80 JavaThread "Store webservice.QuerySessionCache Spool Thread" daemon [_thread_blocked, id=10263]
  0x08178620 JavaThread "com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0" daemon [_thread_blocked, id=10259]
  0x08178ad0 JavaThread "Timer-1" daemon [_thread_blocked, id=10258]
  0x7b7bc638 JavaThread "DefaultScheduler_QuartzSchedulerThread" [_thread_blocked, id=10256]
  0x7d213130 JavaThread "DefaultScheduler_Worker-9" [_thread_blocked, id=10255]
  0x7d8ca040 JavaThread "DefaultScheduler_Worker-8" [_thread_blocked, id=10254]
  0x7dd8b5b8 JavaThread "DefaultScheduler_Worker-7" [_thread_blocked, id=10253]
  0x7d127790 JavaThread "DefaultScheduler_Worker-6" [_thread_blocked, id=10252]
  0x7be22df8 JavaThread "DefaultScheduler_Worker-5" [_thread_blocked, id=10251]
  0x7d8eb7e0 JavaThread "DefaultScheduler_Worker-4" [_thread_blocked, id=10250]
  0x7d8eb210 JavaThread "DefaultScheduler_Worker-3" [_thread_blocked, id=10249]
  0x7d207880 JavaThread "DefaultScheduler_Worker-2" [_thread_blocked, id=10248]
  0x7ceb0690 JavaThread "DefaultScheduler_Worker-1" [_thread_blocked, id=10247]
  0x7d1db6d8 JavaThread "DefaultScheduler_Worker-0" [_thread_blocked, id=10246]
  0x7b7be298 JavaThread "Store webservice.UserQuerySessionCache Expiry Thread" daemon [_thread_blocked, id=10244]
  0x7d31aa10 JavaThread "Store webservice.UserQuerySessionCache Spool Thread" daemon [_thread_blocked, id=10243]
  0x7c0082b8 JavaThread "Store webservice.QuerySessionCache Expiry Thread" daemon [_thread_blocked, id=10242]
  0x7d1ef508 JavaThread "Store webservice.QuerySessionCache Spool Thread" daemon [_thread_blocked, id=10241]
  0x7d00deb8 JavaThread "com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0" daemon [_thread_blocked, id=10237]
  0x7ce904b8 JavaThread "Timer-0" daemon [_thread_blocked, id=10236]
  0x7dd019f8 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=10232]
  0x7dd005c8 JavaThread "CompilerThread1" daemon [_thread_blocked, id=10231]
=>0x080f2d48 JavaThread "CompilerThread0" daemon [_thread_in_native, id=10230]
  0x080f1c60 JavaThread "AdapterThread" daemon [_thread_blocked, id=10220]
  0x080f0d18 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=10219]
  0x080e74e0 JavaThread "Finalizer" daemon [_thread_blocked, id=10218]
  0x080e5e38 JavaThread "Reference Handler" daemon [_thread_blocked, id=10216]
  0x0805ce20 JavaThread "main" [_thread_in_native, id=10214]

Other Threads:
  0x080e3968 VMThread [id=10215]
  0x7dd02fa8 WatcherThread [id=10233]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap
def new generation   total 52544K, used 12760K [0x7e620000, 0x81f20000, 0x83b70000)
  eden space 46720K,  20% used [0x7e620000, 0x7efaca68, 0x813c0000)
  from space 5824K,  51% used [0x813c0000, 0x816a9780, 0x81970000)
  to   space 5824K,   0% used [0x81970000, 0x81970000, 0x81f20000)
tenured generation   total 466048K, used 64752K [0x83b70000, 0xa0290000, 0xae620000)
   the space 466048K,  13% used [0x83b70000, 0x87aac1d8, 0x87aac200, 0xa0290000)
compacting perm gen  total 53248K, used 53212K [0xae620000, 0xb1a20000, 0xb2620000)
   the space 53248K,  99% used [0xae620000, 0xb1a17110, 0xb1a17200, 0xb1a20000)
No shared spaces configured.

Dynamic libraries:
00803000-00818000 r-xp 00000000 08:03 54002830   /lib/ld-2.3.4.so
00818000-00819000 r-xp 00015000 08:03 54002830   /lib/ld-2.3.4.so
00819000-0081a000 rwxp 00016000 08:03 54002830   /lib/ld-2.3.4.so
0081c000-00941000 r-xp 00000000 08:03 54002842   /lib/tls/libc-2.3.4.so
00941000-00943000 r-xp 00124000 08:03 54002842   /lib/tls/libc-2.3.4.so
00943000-00945000 rwxp 00126000 08:03 54002842   /lib/tls/libc-2.3.4.so
00945000-00947000 rwxp 00945000 00:00 0
00949000-0094b000 r-xp 00000000 08:03 54002857   /lib/libdl-2.3.4.so
0094b000-0094c000 r-xp 00001000 08:03 54002857   /lib/libdl-2.3.4.so
0094c000-0094d000 rwxp 00002000 08:03 54002857   /lib/libdl-2.3.4.so
0094f000-00970000 r-xp 00000000 08:03 54002843   /lib/tls/libm-2.3.4.so
00970000-00971000 r-xp 00020000 08:03 54002843   /lib/tls/libm-2.3.4.so
00971000-00972000 rwxp 00021000 08:03 54002843   /lib/tls/libm-2.3.4.so
009b6000-009c4000 r-xp 00000000 08:03 54002858   /lib/tls/libpthread-2.3.4.so
009c4000-009c5000 r-xp 0000d000 08:03 54002858   /lib/tls/libpthread-2.3.4.so
009c5000-009c6000 rwxp 0000e000 08:03 54002858   /lib/tls/libpthread-2.3.4.so
009c6000-009c8000 rwxp 009c6000 00:00 0
009ca000-009dc000 r-xp 00000000 08:03 54002856   /lib/libnsl-2.3.4.so
009dc000-009dd000 r-xp 00011000 08:03 54002856   /lib/libnsl-2.3.4.so
009dd000-009de000 rwxp 00012000 08:03 54002856   /lib/libnsl-2.3.4.so
009de000-009e0000 rwxp 009de000 00:00 0
08048000-08057000 r-xp 00000000 08:03 53234418   /usr/java/jdk1.5.0_06/jre/bin/java
08057000-08059000 rwxp 0000e000 08:03 53234418   /usr/java/jdk1.5.0_06/jre/bin/java
08059000-09921000 rwxp 08059000 00:00 0
74be4000-74be7000 —p 74be4000 00:00 0
74be7000-74c65000 rwxp 74be7000 00:00 0
74c65000-74c68000 —p 74c65000 00:00 0
74c68000-74ce6000 rwxp 74c68000 00:00 0
74ce6000-74ce9000 —p 74ce6000 00:00 0
74ce9000-74d67000 rwxp 74ce9000 00:00 0
74d67000-74d6a000 —p 74d67000 00:00 0
74d6a000-74de8000 rwxp 74d6a000 00:00 0
74de8000-74deb000 —p 74de8000 00:00 0
74deb000-74e69000 rwxp 74deb000 00:00 0
75aef000-75af2000 —p 75aef000 00:00 0
75af2000-75b70000 rwxp 75af2000 00:00 0
75b70000-75b73000 —p 75b70000 00:00 0
75b73000-75bf1000 rwxp 75b73000 00:00 0
75bf1000-75bf4000 —p 75bf1000 00:00 0
75bf4000-75c72000 rwxp 75bf4000 00:00 0
75c72000-75c75000 —p 75c72000 00:00 0
75c75000-75cf3000 rwxp 75c75000 00:00 0
75cf3000-75cf6000 —p 75cf3000 00:00 0
75cf6000-75d74000 rwxp 75cf6000 00:00 0
75d74000-75d77000 —p 75d74000 00:00 0
75d77000-75df5000 rwxp 75d77000 00:00 0
75df5000-75df8000 —p 75df5000 00:00 0
75df8000-75e76000 rwxp 75df8000 00:00 0
75e76000-75e79000 —p 75e76000 00:00 0
75e79000-75ef7000 rwxp 75e79000 00:00 0
75ef7000-75efa000 —p 75ef7000 00:00 0
75efa000-75f78000 rwxp 75efa000 00:00 0
774df000-774e2000 —p 774df000 00:00 0
774e2000-77560000 rwxp 774e2000 00:00 0
77560000-7758b000 r-xs 00000000 08:03 53642088   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/yguard.jar
7758b000-77597000 r-xs 00000000 08:03 53642144   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/xpp3.jar
77597000-775df000 r-xs 00000000 08:03 53642101   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/xmlsec-1.2.1.jar
775df000-778e0000 r-xs 00000000 08:03 53642092   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/xalan-2.6.0.jar
778e0000-77936000 r-xs 00000000 08:03 53642129   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/wss4j.jar
77936000-77955000 r-xs 00000000 08:03 53642134   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/wsdl4j-1.5.1.jar
77955000-77a27000 r-xs 00000000 08:03 53642113   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/web-client.jar
77a27000-77b24000 r-xs 00000000 08:03 53642100   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/unoil.jar
77b24000-77b5d000 r-xs 00000000 08:03 53642084   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/tm-extractors-0.4_patched.jar
77b5d000-77b65000 r-xs 00000000 08:03 53642117   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/tlc124.jar
77b65000-77b6d000 r-xs 00000000 08:03 53642091   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/swarmcache-1.0RC2.jar
77b6d000-77c46000 r-xs 00000000 08:03 53642086   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/standard.jar
77c46000-77e17000 r-xs 00000000 08:03 53642136   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/spring.jar
77e17000-77e1d000 r-xs 00000000 08:03 53642110   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/saxpath.jar
77e1d000-77e2b000 r-xs 00000000 08:03 53642118   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/sandbox.jar
77e2b000-77e30000 r-xs 00000000 08:03 53642083   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/saaj.jar
77e30000-77e75000 r-xs 00000000 08:03 53642076   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/ridl.jar
77e75000-77ee8000 r-xs 00000000 08:03 53642133   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/rhino-js-1.6R2.jar
77ee8000-781e6000 r-xs 00000000 08:03 53642074   /opt/apache-tomcat-5.5.20/webapps/alfresco-sc/WEB-INF/lib/repository.jar
781e6000-781e9000 —p 781e6000 00:00 0
781e9000-78267000 rwxp 781e9000 00:00 0
78267000-7826a000 —p 78267000 00:00 0
7826a000-782e8000 rwxp 7826a000 00:00 0
782e8000-782eb000 —p 782e8000 00:00 0
782eb000-78369000 rwxp 782eb000 00:00 0
78369000-7836c000 —p 78369000 00:00 0
7836c000-783ea000 rwxp 7836c000 00:00 0
783ea000-783ed000 —p 783ea000 00:00 0
783ed000-7846b000 rwxp 783ed000 00:00 0
7846b000-7846e000 —p 7846b000 00:00 0
7846e000-784ec000 rwxp 7846e000 00:00 0
784ec000-784ef000 —p 784ec000 00:00 0
784ef000-7856d000 rwxp 784ef000 00:00 0
7856d000-78570000 —p 7856d000 00:00 0
78570000-785ee000 rwxp 78570000 00:00 0
785ee000-785f1000 —p 785ee000 00:00 0
785f1000-7866f000 rwxp 785f1000 00:00 0
7866f000-78672000 —p 7866f000 00:00 0
78672000-786f0000 rwxp 78672000 00:00 0
786f0000-786f3000 —p 786f0000 00:00 0
786f3000-78771000 rwxp 786f3000 00:00 0
78771000-78774000 —p 78771000 00:00 0
78774000-787f2000 rwxp 78774000 00:00 0
787f2000-787f5000 —p 787f2000 00:00 0
787f5000-78873000 rwxp 787f5000 00:00 0
78873000-78876000 —p 78873000 00:00 0
78876000-788f4000 rwxp 78876000 00:00 0
788f4000-788f7000 —p 788f4000 00:00 0
788f7000-78975000 rwxp 788f7000 00:00 0
78975000-78978000 —p 78975000 00:00 0
78978000-789f6000 rwxp 78978000 00:00 0
789f6000-789f9000 —p 789f6000 00:00 0
789f9000-78a77000 rwxp 789f9000 00:00 0
78a77000-78a7a000 —p 78a77000 00:00 0
78a7a000-78af8000 rwxp 78a7a000 00:00 0
78af8000-78afb000 —p 78af8000 00:00 0
78afb000-78b79000 rwxp 78afb000 00:00 0
78b79000-78b7c000 —p 78b79000 00:00 0
78b7c000-78bfa000 rwxp 78b7c000 00:00 0
78bfa000-78bfd000 —p 78bfa000 00:00 0
78bfd000-78c7b000 rwxp 78bfd000 00:00 0
78c7b000-78c7e000 —p 78c7b000 00:00 0
78c7e000-78cfc000 rwxp 78c7e000 00:00 0
78cfc000-78cff000 —p 78cfc000 00:00 0
78cff000-78d7d000 rwxp 78cff000 00:00 0
78d7d000-78d80000 —p 78d7d000 00:00 0
78d80000-78dfe000 rwxp 78d80000 00:00 0
78dfe000-78e01000 —p 78dfe000 00:00 0
78e01000-78e7f000 rwxp 78e01000 00:00 0
78e7f000-78e82000 —p 78e7f000 00:00 0
78e82000-78ffd000 rwxp 78e82000 00:00 0
78ffd000-79000000 —p 78ffd000 00:00 0
79000000-790fa000 rwxp 79000000 00:00 0
790fa000-79100000 —p 790fa000 00:00 0
79100000-79200000 rwxp 79100000 00:00 0
79275000-79278000 —p 79275000 00:00 0
79278000-792f6000 rwxp 79278000 00:00 0
792f6000-792f9000 —p 792f6000 00:00 0
792f9000-79377000 rwxp 792f9000 00:00 0
79377000-7937a000 —p 79377000 00:00 0
7937a000-793f8000 rwxp 7937a000 00:00 0
793f8000-793fb000 —p 793f8000 00:00 0
793fb000-79479000 rwxp 793fb000 00:00 0
79479000-7947c000 —p 79479000 00:00 0
7947c000-794fa000 rwxp 7947c000 00:00 0
794fa000-794fd000 —p 794fa000 00:00 0
794fd000-7957b000 rwxp 794fd000 00:00 0
7957b000-7957e000 —p 7957b000 00:00 0
7957e000-795fc000 rwxp 7957e000 00:00 0
795fc000-795ff000 —p 795fc000 00:00 0
795ff000-7967d000 rwxp 795ff000 00:00 0
7967d000-79680000 —p 7967d000 00:00 0
79680000-796fe000 rwxp 79680000 00:00 0
796fe000-79701000 —p 796fe000 00:00 0
79701000-7977f000 rwxp 79701000 00:00 0
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7e61f000-81f20000 rwxp 7e61f000 00:00 0
81f20000-83b70000 rwxp 81f20000 00:00 0
83b70000-a0290000 rwxp 83b70000 00:00 0
a0290000-ae620000 rwxp a0290000 00:00 0
ae620000-b1a20000 rwxp ae620000 00:00 0
b1a20000-b2620000 rwxp b1a20000 00:00 0
b2622000-b2628000 r-xp 00000000 08:03 53234524   /usr/java/jdk1.5.0_06/jre/lib/i386/libnio.so
b2628000-b2629000 rwxp 00005000 08:03 53234524   /usr/java/jdk1.5.0_06/jre/lib/i386/libnio.so
b2629000-b2658000 rwxp b2629000 00:00 0
b2658000-b26a9000 rwxp b2658000 00:00 0
b26a9000-b3269000 rwxp b26a9000 00:00 0
b3269000-b46a9000 rwxp b3269000 00:00 0
b46a9000-b4ee4000 r-xs 00000000 08:03 53234574   /usr/java/jdk1.5.0_06/jre/lib/charsets.jar
b4ee4000-b4ef8000 r-xs 00000000 08:03 53234573   /usr/java/jdk1.5.0_06/jre/lib/jce.jar
b4ef8000-b4f7d000 r-xs 00000000 08:03 53234632   /usr/java/jdk1.5.0_06/jre/lib/jsse.jar
b4f7d000-b4fe6000 rwxp b4f7d000 00:00 0
b4fe6000-b75ce000 r-xs 00000000 08:03 53235081   /usr/java/jdk1.5.0_06/jre/lib/rt.jar
b75ce000-b75e1000 r-xp 00000000 08:03 53234529   /usr/java/jdk1.5.0_06/jre/lib/i386/libzip.so
b75e1000-b75e3000 rwxp 00012000 08:03 53234529   /usr/java/jdk1.5.0_06/jre/lib/i386/libzip.so
b75e3000-b7604000 r-xp 00000000 08:03 53234509   /usr/java/jdk1.5.0_06/jre/lib/i386/libjava.so
b7604000-b7606000 rwxp 00020000 08:03 53234509   /usr/java/jdk1.5.0_06/jre/lib/i386/libjava.so
b7606000-b7611000 r-xp 00000000 08:03 53234528   /usr/java/jdk1.5.0_06/jre/lib/i386/libverify.so
b7611000-b7612000 rwxp 0000b000 08:03 53234528   /usr/java/jdk1.5.0_06/jre/lib/i386/libverify.so
b7612000-b761b000 r-xp 00000000 08:03 54001713   /lib/libnss_files-2.3.4.so
b761b000-b761c000 r-xp 00008000 08:03 54001713   /lib/libnss_files-2.3.4.so
b761c000-b761d000 rwxp 00009000 08:03 54001713   /lib/libnss_files-2.3.4.so
b761e000-b7626000 rwxs 00000000 08:03 1064961    /tmp/hsperfdata_tomcat/10214
b7626000-b762c000 r-xp 00000000 08:03 53234533   /usr/java/jdk1.5.0_06/jre/lib/i386/native_threads/libhpi.so
b762c000-b762d000 rwxp 00006000 08:03 53234533   /usr/java/jdk1.5.0_06/jre/lib/i386/native_threads/libhpi.so
b762d000-b762e000 rwxp b762d000 00:00 0
b762e000-b762f000 r-xp b762e000 00:00 0
b762f000-b7b7c000 r-xp 00000000 08:03 53234537   /usr/java/jdk1.5.0_06/jre/lib/i386/server/libjvm.so
b7b7c000-b7bde000 rwxp 0054d000 08:03 53234537   /usr/java/jdk1.5.0_06/jre/lib/i386/server/libjvm.so
b7bde000-b7ff7000 rwxp b7bde000 00:00 0
bfe00000-bfe03000 —p bfe00000 00:00 0
bfe03000-c0000000 rwxp bfe03000 00:00 0
ffffe000-fffff000 —p 00000000 00:00 0

VM Arguments:
jvm_args: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties -Djava.awt.headless=true -Xms512M -Xmx768M -Djava.endorsed.dirs=/opt/tomcat/common/endorsed -Dcatalina.base=/opt/tomcat -Dcatalina.home=/opt/tomcat -Djava.io.tmpdir=/opt/tomcat/temp
java_command: org.apache.catalina.startup.Bootstrap start
Launcher Type: SUN_STANDARD

Environment Variables:
JAVA_HOME=/usr/java/jdk1.5.0_06
JRE_HOME=/usr/java/jdk1.5.0_06/jre
PATH=/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin:/usr/java/jdk1.5.0_06/bin
LD_LIBRARY_PATH=/usr/java/jdk1.5.0_06/jre/lib/i386/server:/usr/java/jdk1.5.0_06/jre/lib/i386:/usr/java/jdk1.5.0_06/jre/../lib/i386
SHELL=/bin/bash

Signal Handlers:
SIGSEGV: [libjvm.so+0x4fd530], sa_mask[0]=0x7ffbfeff, sa_flags=0x14000004
SIGBUS: [libjvm.so+0x4fd530], sa_mask[0]=0x7ffbfeff, sa_flags=0x14000004
SIGFPE: [libjvm.so+0x422860], sa_mask[0]=0x7ffbfeff, sa_flags=0x14000004
SIGPIPE: [libjvm.so+0x422860], sa_mask[0]=0x7ffbfeff, sa_flags=0x14000004
SIGILL: [libjvm.so+0x422860], sa_mask[0]=0x7ffbfeff, sa_flags=0x14000004
SIGUSR1: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGUSR2: [libjvm.so+0x424bb0], sa_mask[0]=0x00000000, sa_flags=0x14000004
SIGHUP: [libjvm.so+0x4245e0], sa_mask[0]=0x7ffbfeff, sa_flags=0x14000004
SIGINT: SIG_IGN, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGQUIT: [libjvm.so+0x4245e0], sa_mask[0]=0x7ffbfeff, sa_flags=0x14000004
SIGTERM: [libjvm.so+0x4245e0], sa_mask[0]=0x7ffbfeff, sa_flags=0x14000004


—————  S Y S T E M  —————

OS:CentOS release 4.1 (Final)

uname:Linux 2.6.9-11.ELsmp #1 SMP Wed Jun 8 17:54:20 CDT 2005 i686
libc:glibc 2.3.4 NPTL 2.3.4
rlimit: STACK 10240k, CORE 0k, NPROC 16383, NOFILE 1024, AS infinity
load average:0.09 0.06 0.05

CPU:total 2 family 15, cmov, cx8, fxsr, mmx, sse, sse2, ht

Memory: 4k page, physical 1034680k(19924k free), swap 2048276k(2038852k free)

vm_info: Java HotSpot(TM) Server VM (1.5.0_06-b05) for linux-x86, built on Nov 10 2005 10:56:33 by java_re with gcc 3.2.1-7a (J2SE release)
2 REPLIES 2

gavinc
Champ in-the-making
Champ in-the-making

prototribe
Champ in-the-making
Champ in-the-making
tommycat1313,

What i've found is that for highly loaded environments its a combination of java, and Redhat's thread safe libraries (tls) that seem to be causing the crash. What we've done is disable tls. It forces java to spawn new processes to handle requests, but avoides the complexity of individual threads in a single process. Which is also known to cause problems with Xen server virtualization. We can now do file operations (like copy 5 GB across machines with no issues)

This does in theory slow down the system a bit, but for increased functionality and stability, its worth it..

It also may be possible to use a fixed version of tls (see the Xen mailinglist for information about that), but so far all we've done is disable tls.

mv /lib/tls /lib/tls.disabled
mv /usr/lib/tls /usr/lib/tls.disabled

reboot