VisualVM's Memory Sampler is inactive for Axon.ivy Engine running as WIndows Service

Genzer Hawker — Fri, 16 Oct 2015 11:06:17 -0400

We have an Axon.ivy Engine running as a Window Service. The version of the Axon.ivy we are using is 5.1.4.48243. We intentionally installed JDK 1.7.0_60 in order to use the VisualVM to monitor and investigate some memory issue. The Axon.ivy Engine is configured with JMX port.

We are able to view the Axon.ivy Enigne application in the VisualVM but the Memory Sampler is rendered inactive and the notification given to us is:

Memory sampling: Not available. Cannot connect to target application. Make sure the application is running on a supported JDK 6 or JDK 7.

If we run the Axon.ivy Engine as a non-service, everything works.

We looked into the Axon.ivy Engine and discovered that it included a JRE inside which was also 1.7.0_60. We tried to configure the argument ivy.dir.jre to the JDK's jre but it still didn't work.

We also discovered that the file jre/bin/server/jvm.dll in the JDK and the Axon.ivy Engine's JRE were different (using SHA-1 checksume) despite everything looks the same on the surface.

The questions are:

Is it possible to use Memory Sampler on VisualVM to the Axon.ivy Engine running as a Windows Service? How?
Why we cannot start the Axon.ivy Engine when we change the argument ivy.dir.jre?

Thanks

UPDATE

I managed to find a way to start both Axon.ivy Engine service and VisualVM both under Local System account using PSTools. However, the result is still the same, the Memory Sampler is still inactive.

How to start the Ivy Server in plain Java?

Genzer Hawker — Mon, 02 Mar 2015 11:11:00 -0500

There are several questions regarding how to access to Ivy environment JUnit tests but there is no elegant solution so far.

In Ivy Designer, if I start the Ivy Server and then start run JUnit tests, the Ivy Server will be automatically stopped. I'm trying to find a way to avoid this (and not sure if there is).

I'm trying to implement a JUnit TestRunner which could start the Ivy Server programmatically but as of now, I don't know the way. What I could found is:

IServer server = ServerFactory.createEclipseEmbeddedTestServer(); server.start(null); <-- stuck here since I don't know how to instantiate IProgressMonitor

My questions are:

Is it possible to configure and run JUnit tests in designer along with the engine?
How can we programmatically start a server?

Thanks & Best Regards

Questions Tagged With engine

VisualVM's Memory Sampler is inactive for Axon.ivy Engine running as WIndows Service

How to start the Ivy Server in plain Java?