JVMPeg
Introduction
JVMPeg was designed based on a popular solution we have for making analysis in situations where JVM threads are consuming a significant amount of CPU: Java application high CPU. When the JVM is consuming a lot of CPU we need the ability to peak inside the thread activity to see what specific thread is a high consumer. We've developed scripts on the aforementioned solution that will capture jstack and top output that can be used in JVMPeg for analysis.
For a command line version of analysis see javahighcpu
Usage
- Download the appropriate high_cpu_*.tar.gz script from How do I identify high CPU utilization by Java threads on Linux/Solaris.
- Run the script per instructions on the solution.
- Drag and drop the resulting high-cpu.out and high-cpu-tdump.out onto the respective drop areas on the screen.
- Optionally select the CPU threshold (default 40%). This will determine at what percentage of CPU consumption to begin showing threads.
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11 Comments
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Log InGreat tool, makes the analysis much faster. Thanks !
Analysis does not start... Tried with 3 different browsers...! Is it really working?
Same here - accepts the dump files but never processes them, just keeps spinning ....
Firefox: Blank page, wont load the application at all Chrome: Allows files to be submitted - no reply from analysis Chromium: Same a Chrome
Hi Paul, we believe we identified an issue with the database backing this app. The database has been restarted and the app should be working again, please let us know if you have any further issues.
Hi Tomé, we believe we identified an issue with the database backing this app. The database has been restarted and the app should be working again, please let us know if you have any further issues.
Is this App working? Can not analize my files with any threshold.
Getting Could not parse high cpu top output, please use a file with valid input, please advise
Tool not working, tried so many times to parse my output. Better to use external thread dump analyzers for analysis, don't relay on this tool as it's not working with high_cpu_linux_jstack.sh script outputs
It seems that this tool does not work any more. I tested but just got a message "Could not parse high cpu top output, please use a file with valid input ". I try to test this tool by Chrome and FireFox. In both case, it fails with same message.
Getting the same error message here.
The problem is related to the date locale format. Change the local time configuration and timezone inside the script. Try something like this: export TZ="America/Toronto" export LC_TIME=en_US.utf8 The date print should look like this: Mon May 4 20:41:44 EDT 2020