Memory issue in servlet application in a tomcat container

bedhinesh · #1 (**permalink**) 07-08-2009, 06:57 PM

Hi ,
i am a newbie in tomcat server and webapplication . we have a simple servlet application running in a tomcat container . which handles more than 10 requests in a sec . in the application we are storing the recieved xml in the server .

the used memory size was gradually inceased upto 11 GB out of 12GB . when i killed all java also the memory used was not released .

28390: /usr/java/jdk1.5.0_06/bin/java -Xms128m -Xmx1536m -Djava.util.logging.manager=org.apache.juli.ClassLo aderLogManager -Djava.util.logging.config.file=/usr/local/tomcat//conf/logging.properties -Djava.endorsed.dirs=/usr/local/tomcat//common/endorsed -classpath :/usr/local/tomcat//bin/bootstrap.jar:/usr/local/tomcat//bin/commons-logging-api.jar -Dcatalina.base=/usr/local/tomcat/ -Dcatalina.home=/usr/local/tomcat/ -Djava.io.tmpdir=/usr/local/tomcat//temp org.apache.catalina.startup.Bootstrap start
Address Kbytes RSS Anon Locked Mode Mapping
00283000 60 - - - r-x-- libresolv-2.5.so
00292000 4 - - - r-x-- libresolv-2.5.so
00293000 4 - - - rwx-- libresolv-2.5.so
00294000 8 - - - rwx-- [ anon ]
009b2000 104 - - - r-x-- ld-2.5.so
009cc000 4 - - - r-x-- ld-2.5.so
009cd000 4 - - - rwx-- ld-2.5.so
009d0000 1268 - - - r-x-- libc-2.5.so
00b0d000 8 - - - r-x-- libc-2.5.so
00b0f000 4 - - - rwx-- libc-2.5.so
00b10000 12 - - - rwx-- [ anon ]
00b15000 8 - - - r-x-- libdl-2.5.so
00b17000 4 - - - r-x-- libdl-2.5.so
00b18000 4 - - - rwx-- libdl-2.5.so
00b1b000 148 - - - r-x-- libm-2.5.so
00b40000 4 - - - r-x-- libm-2.5.so
00b41000 4 - - - rwx-- libm-2.5.so
00b44000 76 - - - r-x-- libpthread-2.5.so
00b57000 4 - - - r-x-- libpthread-2.5.so
00b58000 4 - - - rwx-- libpthread-2.5.so
00b59000 8 - - - rwx-- [ anon ]
00c7f000 76 - - - r-x-- libnsl-2.5.so
00c92000 4 - - - r-x-- libnsl-2.5.so
00c93000 4 - - - rwx-- libnsl-2.5.so
00c94000 8 - - - rwx-- [ anon ]
08048000 60 - - - r-x-- java
08057000 8 - - - rwx-- java
0977a000 14444 - - - rwx-- [ anon ]
47da4000 12 - - - rwx-- [ anon ]
47da7000 504 - - - rwx-- [ anon ]
47e25000 12 - - - rwx-- [ anon ]
47e28000 504 - - - rwx-- [ anon ]
47ea6000 12 - - -
[ anon ]
47ea9000 504 - - - rwx-- [ anon ]
47f27000 12 - - -
[ anon ]
47f2a000 504 - - - rwx-- [ anon ]
47fa8000 12 - - -
[ anon ]
47fab000 504 - - - rwx-- [ anon ]
48029000 12 - - -
[ anon ]
4802c000 504 - - - rwx-- [ anon ]
480aa000 12 - - -
[ anon ]
480ad000 504 - - - rwx-- [ anon ]
4812b000 12 - - -
[ anon ]
4812e000 504 - - - rwx-- [ anon ]
481ac000 12 - - -
[ anon ]
481af000 504 - - - rwx-- [ anon ]
4822d000 12 - - -
[ anon ]
48230000 504 - - - rwx-- [ anon ]
482ae000 12 - - - rwx-- [ anon ]
482b1000 504 - - - rwx-- [ anon ]
4832f000 12 - - -
[ anon ]
48332000 504 - - - rwx-- [ anon ]
4d201000 204 - - - r-xs- catalina-cluster.jar
4d234000 108 - - - r-xs- commons-modeler.jar
4d24f000 8 - - - r-xs- servlets-invoker.jar
4d251000 88 - - - r-xs- tomcat-http.jar
4d267000 164 - - - r-xs- tomcat-ajp.jar
4d290000 24 - - - r-xs- servlets-webdav.jar
4d296000 24 - - - r-xs- catalina-ant-jmx.jar
4d29c000 20 - - - r-xs- tomcat-coyote.jar
4d2a1000 20 - - - r-xs- tomcat-jkstatus-ant.jar
4d2a6000 64 - - - r-xs- catalina-storeconfig.jar
4d2b6000 28 - - - r-xs- catalina-ant.jar
4d2bd000 20 - - - r-xs- servlets-default.jar
4d2c2000 48 - - - r-xs- naming-resources.jar
4d2ce000 52 - - - r-xs- jsp-api.jar
4d2db000 40 - - - r-xs- naming-factory.jar
4d2e5000 76 - - - r-xs- jasper-runtime.jar
4d2f8000 112 - - - r-xs- commons-el.jar
4d314000 96 - - - r-xs- servlet-api.jar
4d32c000 400 - - - r-xs- jasper-compiler.jar
4d390000 152 - - - r-xs- naming-factory-dbcp.jar
4d3b6000 412 - - - r-xs- mysql-connector-java-3.1.10-bin.jar
4d41d000 1188 - - - r-xs- jasper-compiler-jdt.jar
4d546000 40 - - - r-xs- tomcat-i18n-en.jar
4d550000 36 - - - r-xs- tomcat-i18n-es.jar
4d559000 32 - - - r-xs- tomcat-i18n-fr.jar
4d561000 36 - - - r-xs- tomcat-i18n-ja.jar
4d56a000 784 - - - r-xs- localedata.jar
4d62e000 172 - - - r-xs- sunpkcs11.jar
4d659000 152 - - - r-xs- sunjce_provider.jar
4d67f000 4 - - -
[ anon ]
4d680000 1528 - - - rwx-- [ anon ]
4d7fe000 8 - - -
[ anon ]

this is the total java process running in the system . i am not able to identify the process - r-x-- [ anon ] ..( i deleted more anon process as the character exceeds more ) please advise me to find a solution for this ..

thanks
Dhinesh

parul1234 · #2 (**permalink**) 07-24-2009, 06:46 AM

I think there is some memory leakage .. you will need to find it out ..

bedhinesh · #3 (**permalink**) 07-24-2009, 02:26 PM

Hi parul1234 thanks for your reply . i know that there is a memory leak . i want to know how we can figure out where the leak is and how to solve that .

Thanks