java - TOMCAT 7, Can't change the heap size -

i have set heap size of tomcat 7 adding boot script:

export catalina_opts="-xms1024m -xmx248m" 

i change /etc/init.d/tomcat7 :

if [ -z "$java_opts" ];         java_opts="-djava.awt.headless=true -xmx2048m -xms1024m" fi 

i reboot computer , restart tomcat:

service tomcat7 restart 

and verify $catalina_opts works:

> echo $catalina_opts -xms1024m -xmx2048m 

but when go tomcat manager, note heap has not changed.

free memory: 38.02 mb total memory: 123.75 mb max memory: 123.75 mb 

please, need this.

check setenv.sh in tomcat/bin, according manual should right place put params.

another option, depend on os tomcat package, may config param overrided in /etc/conf.d/tomcat/ or /etc/tomcat. check init script , catalina.sh find settings overrided.

btw if run ps -ef | grep tomcat should see full command line arguments: may give idea of how init script build command, , can investigate params set.