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Questions tagged [jmc]

Java Flight Recorder and Java Mission Control together create a complete tool chain to continuously collect low level and detailed runtime information enabling after-the-fact incident analysis.

Java Flight Recorder is a profiling and event collection framework built into the Oracle JDK. It allows Java administrators and developers to gather detailed low level information about how the Java Virtual Machine (JVM) and the Java application are behaving. Java Mission Control is an advanced set of tools that enables efficient and detailed analysis of the extensive of data collected by Java Flight Recorder. The tool chain enables developers and administrators to collect and analyze data from Java applications running locally or deployed in production environments.

http://www.oracle.com/technetwork/java/javaseproducts/mission-control/index.html

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Cannot start JVM in Eclipse External Tools with Flight Recording Args

I am invoking my java code via Eclipse External Tools as an ant target. I want to monitor the JVM with JMC (Mission Control) and hence start up the Eclipse External Tools with arguments: "-XX:+UnlockCommercialFeatures -XX:+FlightRecorder". However,…
user2676007
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Display tabular mbean attribute in tabular form

I have an MBean that has an attribute that is TabularType of a CompositeType, basically a table of rows. I would like to have this displayed as a table of rows in either VisualVM or Java Mission Control. VisualVM (with the MBeans plugin) shows only…
Philippe Marschall
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JMC flight recorder not showing custom methods

This is my first time with Flight recorder. Tried to start a flight recording against my app code which has the flags set -XX:+UnlockCommercialFeatures -XX:+FlightRecorder. However when I open the recorded file, it would seem that only core java…
Sathyakumar Seshachalam
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Does JMC Flight Recording force Full GC?

I am experiencing some performance related issues (works ok most of the time, and from time to time there's a spike in the response time from 100ms to 4/5s with no apparent reason) in services implemented in OSB. One of the hypothesis to explain…
Fabio
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Java mission control configure events from command line

I want to configure JMC such that it will send email notifications when CPU hike beyond a threhold. I want to do it from command line because JMC will be run from the Jenkins job.
UmeshPathak
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System Processes table of Java Mission Control is empty

When I an using Flight Recorder for any server for the first time, the Processes tab under System is listing the processes. But second time onwards, for the same server the system System Processes table is empty. What do I need to do to get the…
user7406550
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Java App Profiling to find out the Culprit Classes

We have a java web app running in a server. It is hosted with tomcat. I have enabled Flight recorder and i am able to connect to connect with JMC and recording Flight... Now, i am not sure how i can find the classes which is making my app slow.Let…
Fahad Ahammed
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JMC Historical Data Settings, persisted_jmx_data folder naming

Im using Java Mission Control 5.5 and are currently monitoring a number of remove JVM applications. From time to time the applications are rebooted and I need to restart the JMC, and then of course I loose all historical data. "Historical Data…
David Karlslatt
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How to connect to remote WildFly using JMC?

I have a Linux server where I'm running WildFly 10. I work on a Windows machine and I want to profile the remote application server. I've checked that port 9990 is enabled for access via http by accessing http://:9990/console and via JMX access…
Luiggi Mendoza
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Are exceptions counted for JVM lifetime in Java Flight Recorder?

I have run a Java Flight Recorder recording for 2 minutes on a JBoss EAP 6.1 app server under load. I enabled exception counting (Java Application => Java Exception => Enabled=true) and I'm surprised by the number of reported exceptions. When I look…
ola
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How to determine remote RMI server port currently in use

I have a java process running (on java 7) on some remote server that I want to monitor using Java Mission Control. However, JMC is unable to connect, although I can telnet to the server using the port jmx remote port (12345 here, see below). The…
user1993047
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How Java Flight Recorder samples native frames (jni / jna)

I am trying to understand how Java Flight Recorder samples an application which use a native library (through JNA in my case). Lets write a test case which will spend most of its time in native land: public class Main { interface MyLib extends…
Clément MATHIEU
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use oracle JMC along with other javaagent like aspectj

I'm trying to profile my application with JDK bundled JMC flight recorder However, when I apply below JVM args to enable recorder: -XX:+UnlockCommercialFeatures -XX:+FlightRecorder All of my aop advice seems not work, looks like the agent does not…
anuni
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How do I enable JMX/Management Agent on running JVM?

I'm trying to get JMX metrics from a currently running JVM. I'd like to be able to do this without having to enable it on the CLI when running the app. I'm trying to write a generic CLI utility, with some features missing from JConsole & JMC. Both…
Charlie E.
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Not able to record events for karaf service using Java flight recorder(JFR) in JMC

I'm getting message like "this flight recording has no recording settings events" while recording events for karaf service. Can any one please help me for this issue. I put the setting in service script under Karaf Arugs: like …
Brahmakumar M
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