[JENKINS-42246] Add the request handler utilization stats processing to support bundles

Request Handlers are the critical resource of Jenkins. If they get completely utilized, it causes Jenkins UI and REST API slowdown. If all requests hang due to whatever reason, Jenkins UI also hangs. So I think the Support Core plugin would benefit from some improvements in the area.

• Generate basic stats about the Request handlers utilization


• If all the request handlers get consumed AND hang for a timeout (e.g. 30 seconds), automatically generate a support bundle, which would allow to diagnose the outage

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Originally reported by oleg_nenashev, imported from: Add the request handler utilization stats processing to support bundles

• assignee: schristou
  
• status: Open
  
• priority: Major
  
• component(s): support-core-plugin
  
• label(s): diagnostics
  
• resolution: Unresolved
  
• votes: 0
  
• watchers: 2
  
• imported: 20251212-090250
  

Raw content of original issue

Request Handlers are the critical resource of Jenkins. If they get completely utilized, it causes Jenkins UI and REST API slowdown. If all requests hang due to whatever reason, Jenkins UI also hangs. So I think the Support Core plugin would benefit from some improvements in the area.




	
Generate basic stats about the Request handlers utilization

	
If all the request handlers get consumed AND hang for a timeout (e.g. 30 seconds), automatically generate a support bundle, which would allow to diagnose the outage

The issue names no files, tests, or entry points. Start by locating the support-core-plugin code that assembles support bundles and exposes Jenkins request-handler diagnostics, then determine how utilization stats and timeout-triggered bundle generation should fit together. Done means basic request-handler utilization stats are included and a bundle is generated when all handlers remain hung for the stated timeout.

Written by the indexing model from the issue text.