troubleshooting Question

Out of Memory Errors

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kamarja asked on
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Hello Experts,

We just launched a new server and we are having a lot of performance related problems. We have the following environment.

uname -a
SunOS behemoth 5.9 Generic sun4u sparc SUNW,Sun-Fire-880

java -version
java version "1.4.2_03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)

RAM: 4096M

 ./httpd -version
Server version: Apache/1.3.27 (Unix)

tomcat version 4.1, xlst, oscache.

After starting the server, the load goes up very high - currently: load average: 1.25 and the webserver is very slow and then eventually dies if the site becomes very busy. I saw the following error in the tocat logs:

Unexpected Signal : 10 occurred at PC=0xFECD6270
Function=[Unknown. Nearest: JVM_ArrayCopy+0x5600]

Dynamic libraries:
0x10000         /usr/local/j2sdk1.4.2_03/bin/java
0xff370000      /usr/lib/
0xff3a0000      /usr/lib/
0xff280000      /usr/lib/
0xff360000      /usr/platform/SUNW,Sun-Fire-880/lib/
0xfec00000      /usr/local/j2sdk1.4.2_03/jre/lib/sparc/server/
0xff240000      /usr/lib/
0xff210000      /usr/lib/
0xfeb00000      /usr/lib/
0xfebd0000      /usr/lib/
0xff1f0000      /usr/lib/
0xff270000      /usr/lib/
0xfeae0000      /usr/lib/
0xfeac0000      /usr/lib/
0xfeaa0000      /usr/lib/
0xfea70000      /usr/lib/
0xfea50000      /usr/platform/SUNW,Sun-Fire-880/lib/
0xfea10000      /usr/local/j2sdk1.4.2_03/jre/lib/sparc/native_threads/
0xfe9c0000      /usr/local/j2sdk1.4.2_03/jre/lib/sparc/
0xfe970000      /usr/local/j2sdk1.4.2_03/jre/lib/sparc/
0xfe950000      /usr/local/j2sdk1.4.2_03/jre/lib/sparc/
0xfbc20000      /usr/local/j2sdk1.4.2_03/jre/lib/sparc/
0xf9be0000      /usr/lib/

Heap at VM Abort:
 par new generation   total 8128K, used 8064K [0x75800000, 0x76000000, 0x76000000)
  eden space 8064K, 100% used [0x75800000, 0x75fe0000, 0x75fe0000)
  from space 64K,   0% used [0x75ff0000, 0x75ff0000, 0x76000000)
  to   space 64K,   0% used [0x75fe0000, 0x75fe0000, 0x75ff0000)
 concurrent mark-sweep generation total 2088960K, used 1929831K [0x76000000, 0xf5800000, 0xf580
 concurrent-mark-sweep perm gen total 16384K, used 9840K [0xf5800000, 0xf6800000, 0xf9800000)

Local Time = Sun Mar 28 03:22:11 2004
Elapsed Time = 118113
# HotSpot Virtual Machine Error : 10
# Error ID : 4F530E43505002EF 01
# Please report this error at
# Java VM: Java HotSpot(TM) Server VM (1.4.2_03-b02 mixed mode)

Any help will be greatly appreciated. Thanks in advance.

Tomcat is started with the following options :

CATALINA_OPTS="-server -Xms2048m -Xmx2048m -XX:+UseConcMarkSweepGC -XX:+UseParNewGC "

- Ian

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