[JENKINS-24850] Collect hot threads

Collect thread dumps from the "hottest" threads, perhaps every n minutes.

Background:

https://weblogs.java.net/blog/brucechapman/archive/2008/03/hot_threads.html

http://java.dzone.com/news/porting-hot-thread-detector-vi

Example implementation: https://github.com/elasticsearch/elasticsearch/blob/1816951b6b0320e7a011436c7c7519ec2bfabc6e/src/main/java/org/elasticsearch/monitor/jvm/HotThreads.java

Sample output: https://gist.github.com/mlamp/3852210

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Originally reported by recampbell, imported from: Collect hot threads

• assignee: schristou
  
• status: Open
  
• priority: Minor
  
• component(s): support-core-plugin
  
• resolution: Unresolved
  
• votes: 1
  
• watchers: 2
  
• imported: 20251212-090250
  

Raw content of original issue

Collect thread dumps from the "hottest" threads, perhaps every n minutes.


Background:

https://weblogs.java.net/blog/brucechapman/archive/2008/03/hot_threads.html

http://java.dzone.com/news/porting-hot-thread-detector-vi


Example implementation: https://github.com/elasticsearch/elasticsearch/blob/1816951b6b0320e7a011436c7c7519ec2bfabc6e/src/main/java/org/elasticsearch/monitor/jvm/HotThreads.java


Sample output: https://gist.github.com/mlamp/3852210

Start by reading the linked hot-thread background and Elasticsearch HotThreads implementation, then compare the sample output. Define the collection interval and the expected hottest-thread dump format before identifying the plugin entry point; done means the support data includes periodic dumps for the hottest threads.

Written by the indexing model from the issue text.