Hi Peter, It sounds like you've got Tomcat 5.0.16 running in-process with Apache2. I'm trying to get this configuration working. Would you mind posting your workers.properties file?
Thanks, Dave -----Original Message----- From: Peter Burkholder [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 14, 2004 8:29 AM To: [EMAIL PROTECTED] Subject: Signal 11 crash and mod_jk, mod_jk2, apache2 I've seen similar threads but not a resolution, so I'll raise this issue again. I'm moving our web server and web apps to a new machine, a dual Xeon Redhat 8 box. Tomcat 5.0.16 and Tomcat 4.1.29 both handle loads well when using the Tomcat HTTP server. But I need to connect Tomcat to an Apache front-end, currently 2.0.28. When I use either mod_jk or mod_jk2, the JVM crashes after 1970-1980 requests with Signal 11 and this in logs/catalina.out: JVMDG217: Dump Handler is Processing a Signal - Please Wait. JVMDG303: JVM Requesting Java core file JVMDG304: Java core file written to /ucar/dpc/aegean/www/web/www.dlese.org/tomcat/javacore.20040113.142044.6635. txt JVMDG215: Dump Handler has Processed Exception Signal 11. and this exception in the java core: 2XMEXCPINFO JVM Exception 0x2 (subcode 0x0) occurred in thread "TP-Processor9" (TID:0x10174AB8) I've seen suggested avenues like: # kernel rebuilds (some 2.4.18-2.4.2? kernels had bad thread handling) # switching JVMs, e.g., Sun, IBM, BEA JRockit # cleaning out the work directory, # using or not using LD_ASSUME_KERNEL, # disabling hyperthreading, # disabling SMP, # adjusting heap and stack sizes # rebuilding the mod_jk or mod_jk2 connectores. # expanding user ulimits That makes for a huge matrix of possibilities. Any hints on which paths might be more fruitful, or others to consider. Are more data needed to help isolate this problem? Thanks, Peter MISC DETAILS: Kernel: Redhat 2.4.20-27.8smp JVM: IBMJava2-141 glibc Version : 2.3.2 Memory: 2Gb JVM Memory: Behavior is the same with either -Xms250m or -Xms512m 2 CPUS /w hyperthreading looks like 4 CPUs CORE EXCERPTS: 1HPUSERLIMITS User Limits (in bytes except for NOFILE and NPROC) - NULL ----------- 2HPUSERLIMIT RLIMIT_FSIZE : infinity 2HPUSERLIMIT RLIMIT_DATA : infinity 2HPUSERLIMIT RLIMIT_STACK : 2093056 2HPUSERLIMIT RLIMIT_CORE : 0 2HPUSERLIMIT RLIMIT_NOFILE : 1024 2HPUSERLIMIT RLIMIT_NPROC : 7168 2HPENVVAR IBM_JAVA_COMMAND_LINE=/opt/java/java/bin/java -Xmx512m -Djava.end orsed.dirs=/opt/tomcat/tomcat4.1/common/endorsed -classpath /opt/java/java/lib/t ools.jar:/opt/tomcat/tomcat4.1/bin/bootstrap.jar -Dcatalina.base=/www/web//w ww.d lese.org/tomcat -Dcatalina.home=/opt/tomcat/tomcat4.1 -Djava.io.tmpdir=/www/ web/ /www.dlese.org/tomcat/temp org.apache.catalina.startup.Bootstrap -config /www/we b//www.dlese.org/tomcat/conf/dds.xml start -- Peter Burkholder, System Administrator Digital Library for Earth System Education (DLESE® -- http://www.dlese.org) [EMAIL PROTECTED] DLESE Program Center (DPC) ~~~ ~~ ~~~~ __o UCAR/DPC, P.O. Box 3000 Ph) +1-303-497-2663 ~~~ ~~~~ ~~ _`\<,_ Boulder, CO 80307-3000 Fx) +1 303-497-8336 ~~~~ ~~~ ~~~~ (*)/ (*) --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
