JDK-8134607 : Remove per-compiler performance counters
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 9
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2015-08-27
  • Updated: 2017-05-17
  • Resolved: 2015-10-12
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9 b89Fixed
Sub Tasks
JDK-8177126 :  
The per-thread performance counters for compiler threads have relatively little value in the presence of more fine-grained and precise compilation events and should be considered for removal. A quick survey indicates there is little or no usage of these counters:


Removing these counters would ensure that the number of perf counters which write to the PerfData memory buffer is invariant with JVM scale factors (#CPU, #threads etc)
CCC reviewed.