JDK-8145345 : LogCompilation output is empty after JEP165: Compiler Control
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 9
  • Priority: P1
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2015-12-14
  • Updated: 2017-08-17
  • Resolved: 2015-12-17
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JDK 9
9 b103Fixed
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Description
P1 because it is regression - lost functionality.
Running with -XX:+UnlockDiagnosticVMOptions -XX:+LogCompilation -Xbatch shows only head and tail of <task> in hotspot log file (see attached):

<task compile_id='1' method='mathtest test (DI)D' bytes='26' count='2' backedge_count='5000' iicount='2' blocking='1' stamp='0.232'>
<task_done success='1' nmsize='824' count='2' backedge_count='5000' inlined_bytes='5' stamp='0.237'/>
</task>

Comments
Also testing (old and new) did not catch this problem! Pavel, Igor, please address this.
14-12-2015