How to fix the error "unable to open socket file" in VisualVM to profile memory of my application?

Asked Jun 15 '20 at 14:49

Active Jun 15 '20 at 14:49

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Why am I getting the message "Unable to open socket file: target process not responding or HotSpot VM not loaded" when I am trying to profiling memory using VisualVM? I am trying to profile Flink TaskManager. This answer says that I have to increase the timeout of VisualVM but the parameter -Dsun.tools.attach.attachTimeout does not work to start VisualVM with it. I get the same or similar error when I try to dump the memory using jstack:

$ sudo jstack 700
700: Unable to open socket file /proc/700/root/tmp/.java_pid700: target process 700 doesn't respond within 10500ms or HotSpot VM not loaded

asked Jun 15 '20 at 14:49

Knoblauch

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did you find the answer on how to solve this problem? – Umar Tahir Jun 13 '21 at 08:58
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No, I switched to another profiler such as YourKit – Knoblauch Jun 13 '21 at 11:22

How to fix the error "unable to open socket file" in VisualVM to profile memory of my application?

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