How to do memory profiling on a remote Java web application

Question

I know that we can use tools like JProfiler, etc. Is there any tutorial on how to configure it to display memory usage only through remote monitoring?

Any idea?

Answer 1

you have VisualGC, it is not very advanced, but you can see the memory usage of your application (garbage, old, permanent, etc.)

http://java.sun.com/performance/jvmstat/visualgc.html

to resume: you start the daemon monitoring on a remote computer ( http://java.sun.com/j2se/1.5.0/docs/tooldocs/share/jstatd.html , see security paragraph)

JAVA_HOME/bin/jstatd -J-Djava.security.policy=jstatd.all.policy

, jstatd.all.policy, :

    grant codebase "file:${java.home}/../lib/tools.jar" {   
permission java.security.AllPermission;
};

pid jps:

http://java.sun.com/j2se/1.5.0/docs/tooldocs/share/jps.html#jps

, visualgc:

visualgc the_pid@remote_machine_address

Answer 2

YourKit, ( ).

- / script (catalina.sh tomcat) :

JAVA_OPTS="-Djava.awt.headless=true -agentlib:yjpagent -Xrunyjpagent:sessionname=Tomcat"

, YourKit ( catalina.sh):

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:~/yourkit/yjp-6.0.16/bin/linux-x86-32

YourKit .

Answer 3

VM Java-, - -agentlib:jprofilerti=port=25000

JProfiler.

:

• NetBeans

• Intellij

Answer 4

Jprofiler. Tomcat Jprofiler.

• Linux .bash_profile /root.
  jprofiller ( )

  .bash_profile file
  export LD_LIBRARY_PATH=/dsvol/jprofiler6/bin/linux-x86
  

• Tomcat. catalena.sh bin.
  catelana.sh ( catalena.sh).

  export JPROFILER_HOME
  JAVA_OPTS="-Xms768m -Xmx1024m -XX:PermSize=256m -XX:MaxPermSize=256m -Dfile.encoding=UTF8 -agentpath:/opt/Performance/jprofiler7/bin/linux-x86/libjprofilerti.so=port=8849 $CATALINA_OPTS"
  

• bin, starup.sh

Answer 5

VisualVM, , :

Java VisualVM

EDIT : I wrote a blog post on how to configure remote profiling through an SSH tunnel here:

http://kamilmroczek.com/2012/11/16/168787859/