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Questions tagged [jfr]

JRockit/Java/JDK Flight Recorder (JFR), a performance monitoring and profiling tool

176 questions
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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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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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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 can i record JFR for jdk1.7_02 version

I want to record JFR(Java Flight recorder) for an live application hosted on jdk1.7_02. I know that JFR was only introduced after jdk1.7_40. But can i do the same for jdk1.7_02 version by any means?? Please suggest if anybody has any idea. And if it…
Sophiya
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How can I get the last recordings from Java Flight Recorder?

I'm starting Java Flight Recorder with the following command. jcmd $PID JFR.start duration=2h filename=my_record.jfr dumponexit=true settings=profile It's recording the first 2 hours after started. For example, if it started at 1:00, it records…
hbelmiro
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Does FlightRecorder run on JavaSE 8 Embedded 8 compact2 profile?

I am using JavaSE Embedded 8 compact 2 profile on an embedded platform (like Rasp Pi). I choose compact 2 profile to have footprint as small as possible. For development purposes, I want to do profiling, without changing the profile during runtime…
Jochen Hiller
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Java Flight Recorder / Java Mission Control custom events for Tomcat

Are there Java Flight Recorder / Java Mission Control custom events for Tomcat? If so, where are they documented?
XDR
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how to generate the JFR and Heap dump reports in linux servers?

how to create the jfr and heapdump reports in linux servers? Blockquote
srinath upputuri
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Java Flight Recording for JDK 8

I just read about Java Flight Recording and figured out that it's a commercial feature. Since it's enabled by -XX:+UnlockCommercialFeatures -XX:+FlightRecorder. so the question is if it's possible for me to use it in our production environment for…
Some Name
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What are the use cases of using Java GC logging feature instead of JMC?

Java Mission Control has been open sourced lately. It's a full-fledged profiler which can provide a lot information about a running application. Not only it can show how much memory the particular application is using or how often Java GC is kicking…
user1140313
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Java Flight Recorder throws FileNotFoundException

Java Flight Recorder throws IO error: Could not download recording for My Recording. java.io.FileNotFoundException: No chunks Screenshot: http://s016.radikal.ru/i334/1609/86/02219bfb4c69.png I use these JVM flags: java -jar ^ -server…
TheSN
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