JDK-7200092 : Make NMT a bit friendlier to work with
  • Type: Bug
  • Component: hotspot
  • Sub-Component: runtime
  • Affected Version: 8
  • Priority: P4
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2012-09-21
  • Updated: 2013-06-26
  • Resolved: 2012-10-02
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JDK 7 JDK 8 Other
7u40Fixed 8Fixed hs24Fixed
Related Reports
Relates :  
JDK-8004053 - -XX:NativeMemoryTracking:off doesn't work after fix for 7200092
Description
I was trying out NMT a few days ago but couldn't get it to work until I realised I gave it the wrong option, and it swallowed it silently but didn't do anything.
I was trying to use -XX:NativeMemoryTracking=details instead of -XX:NativeMemoryTracking=detail because because of a typo in a pdf.

It would be much friendlier if we failed explicitly and printed out the offending option given.
Comments
Verified with jdk8-b60 on Windows 7 x64.
13-10-2012
EVALUATION Fix is to exit on encountering a bad option, and printing the name of that option.
21-09-2012