oracle / oracle/visualvm

Virtual threads support

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#462 8 comments 19 reactions 0 assignees View on GitHub

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enhancement
Dominant language
Java
Stars
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Forks
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PR merge metrics
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Description

Is your feature request related to a problem? Please describe.
The heap dump produced by VisualVM, and the Thread tab in the UI, do not show virtual threads.

Describe the solution you'd like
The heap dump should show virtual threads and their associated stack-trace (e.g. jcmd <pid> Thread.dump_to_file <file>). The Thread UI tab should show virtual threads.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by examining the heap-dump output and the Thread tab in VisualVM, then compare their current thread handling with the virtual-thread information produced by jcmd <pid> Thread.dump_to_file <file>. Done means heap dumps include virtual threads and their associated stack traces, and the Thread tab displays virtual threads.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
devtools, observability
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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