jvmmonitor not listing any JVMs in eclipse
how to check performance of java program in eclipse
java cpu usage monitoring
I am trying to use jvmmonitor to profile my app in eclipse but there are no jvms listed, not even the running eclipse jvm and when I start my app the new jvm does not appear.
The docs say >
At least one JVM (Eclipse itself) should be shown on JVM Explorer. If no JVM is shown, it is likely that Eclipse is not started with supported JDK. For example, JRE might be used instead of JDK. To solve the issue, Check the value of system property java.home with Help > About Eclipse > Installation Details > Configuration. You may see that the supported JDK is not specified to java.home. Close Eclipse. To enforce using a desired JDK on Eclipse, specify the option -vm to the eclipse executable, or alternatively specify it in eclipse.ini. See the Workbench User Guide to learn how to specify that option. Start Eclipse.
The java.home property in the eclipse config says /home/myname/programs/jdk/jre
I have tried to change it but nothing will. my -vm is already set to the jdk directory and my linux .profile and .bashrc exports to the JAVA_HOME to the jdk directory but java.home in eclipse still says /home/myname/programs/jdk/jre
I have also set the jdk root directory to /home/myname/programs/jdk/ in the java>monitor>tools preferences page but still no luck.
I have uninstalled jvmmonitor and reinstalled it completely but there is no change.
I am running eclipse indigo with jdk 7 and jvmmonitor 3.8
This is driving me nuts now, any ideas would be most welcome
Thanks in advance
I have found the solution after hours of fiddling. I am using VisualJVM now instead but they operate in the same way by connecting to a local socket and setting up a JMX connection.
Firstly Both jvmmonitor/visualjm and your java app MUST be running under the same user.
The user must have write access to the tmp directry on linux /tmp/.
When any java app is launched a local file with the process PID for the java program is created in hsperfdata_myusername folder in tmp which is used by java profiling software to connect to the jvm running your java program.
If you launch a java program from a terminal and the current directory of the terminal is not your home directory, eg. launching from MYNAME:/home/myname/project/myjavaapp$ you may find that you can connect to the jvm but not be able to sample or profile it. Making the current directory your home directory should solve this problem.
JVM Monitor documentation, Find JVM Explorer that appears at the top left on Eclipse window. Note: If you cannot find any JVMs on JVM Explorer, see FAQ. If you see the additional message "No providers installed", JDK root directory specified on preference page At least one JVM (Eclipse itself) should be shown on JVM Explorer. If no JVM is shown, there are two possible causes. cause 1) Eclipse is not started with supported JDK. For example, JRE might be used instead of JDK. To solve the issue, Check the value of system property java.home with Help > About Eclipse > Installation Details > Configuration. You may see that the supported JDK is not specified to java.home.
You have to change the .ini file of Eclipse
Here is the eclipse.ini file in full:
-startup plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar --launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.0.200.v20090519 -product org.eclipse.epp.package.jee.product --launcher.XXMaxPermSize 256M -showsplash org.eclipse.platform --launcher.XXMaxPermSize 256m -vm C:\JavaJDK\Java\jdk1.6.0_01\jre\bin\client\jvm.dll -vmargs -Dosgi.requiredJavaVersion=1.5 -Xms40m -Xmx512m
Cannot detect any running JVMs on JDK 1.7.0_07 · Issue #74 , No errors at all. What is your environment for Eclipse? Windows: 7 SP 1 Eclipse Helios: 3.6.2 JVM Monitor: 3.8.0 Java: Sun JDK 1.7.0_07-b10 I can't seem to get JVM monitor to detect any running JVMs at all, neither the Eclipse JVM or a new application JVM. I have tried setting the -vm switch in eclipse.ini to use a JDK javaw.exe; and setting the Java application to use the J
This solution from the JVisualVM Troubleshooting Guide also helps me for jvmmonitor:
Local Applications Cannot Be Monitored
Description: An error dialog saying that local applications cannot be monitored is shown immediately after VisualVM startup. Locally running Java applications are displayed as (pid ###).
Resolution: This can happen on Windows systems if the username contains capitalized letters. In this case, username is
UserNamebut the jvmstat directory created by JDK is
%TMP%\hsperfdata_username. To workaround the problem, exit all Java applications, delete the
%TMP%\hsperfdata_usernamedirectory and create new
Start is shown but nothing happens · Issue #83 · gavioto/jvmmonitor , Open JVM Monitor view in Eclipse 2. "Start Monitoring" getting stuck and disappering some time later, not actually starting the monitoring. In this case you should not use com.sun.tools.attach.VirtualMachine class, since VirtualMachine is only a part of JDK, not JRE. Oracle license agreement does not allow to distribute tools.jar with your application without distributing the entire JDK.
Did you check the directive in this JVMMonitor's FAQ?
If the problem persists, run Eclipse as an Administrator, at least once after the installation of JVM Monitor plugin.
This solved the problem for me.
JVM Monitor, As far as I know, this means re-downloading and re-installing all the plugins, which is not at all convenient. Markets. When i call VirtualMachine.list(), it works fine when i'm on eclipse and with jdk. But as soon as i change to jre, or the i try my app out of eclipse, this method seems to return an empty list each
jvmmonitor - Google Code Archive, 73, WontFix, No JVM monitor in "Window > Open Perspective > Other" to select for Eclipse Juno 4.2.0 Type-Defect Priority-Medium. 72, Fixed, Problem vith JVM Monitor is a Java profiler integrated with Eclipse to monitor CPU, threads and memory usage of Java applications. JVM Monitor would be useful to quickly inspect Java applications without preparing any launch configuration beforehand. JVM Monitor automatically finds the running JVMs on local
jvmmonitor - issue #78 - Google Code Archive, I am in Max 10.7.5; Java 6; Eclipse Juno. I installed the JVM Monitor through the "Install new Software", then "http://www.jvmmonitor.org/updates/3.8". 1.6 and 1.7, no difference) JVM Monitor Version 220.127.116.113020300 1. Open JVM explorer 4 jvms shown. None of them monitorable but I don't care about those. 2. Launch my application from within Eclipse. Application starts and a new PID is shows in my JVM Explorer 3. Click on this and it says "Monitoring is not supported for the selected JVM" See FAQ.
Profile and Monitor your Java Virtual Machine, Table of contents [hide]. 1 1- JConsole; 2 2- Java VisualVM; 3 3- Monitor JVM on Eclipse IDE. 3.0.1 Plugin installation; 3.0.2 Use JVM Monitor JVM Monitor is a Java profiler integrated with Eclipse to monitor CPU, threads and memory usage of Java applications. JVM Monitor would be useful to quickly inspect Java applications without preparing any launch configuration beforehand. JVM Monitor automatically finds the running JVMs on local host and you can easily start monitoring them.