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Is there any known command line tool to ask the JVM to see memory usage and thread dumps of a java program. something like a headless jvisualvm?
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To find the long running threads, highlight all the thread dumps you want to check, and then click on the binoculars: In the pop up dialogue, click start detection, and you'll get your long running threads just below the dumps themselves: In my example, each thread dump has 157 threads.
The jstack command prints Java stack traces of Java threads for a specified Java process. For each Java frame, the full class name, method name, byte code index (BCI), and line number, when available, are printed.
You can use jstat to get gc information, jstack to get stack traces and jmap to get memory statistics and memory dumps for off-line inspection.
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