[HBASE-27956] Support wall clock profiling in ProfilerServlet

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.6.0, 2.4.18, 2.5.6, 3.0.0-beta-1
• Release Note: You can now do wall clock profiling with async-profiler by specifying ?event=wall query param on the profiler servlet (/prof)
• Assignee: Bryan Beaudreault
• Reporter: Bryan Beaudreault
• Created: 29/Jun/23 17:45
• Updated: 05/Aug/23 20:55
• Resolved: 04/Aug/23 12:54

Description

The async-profiler supports profiling wall clock time, but our ProfilerServlet does not recognize that type. When an unrecognized type is passed, it defaults to cpu. We should add support for wall clock, which would be triggered via the string "wall"

Issue Links

• links to: GitHub Pull Request #5337