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I've just tested some J2EE containers with jVisualVM, but I have troubles with correctly interpreting scores. I saw that values of JIT activity often are over 100% (sometimes 800%). What does it mean? I've read that JIT activity are counted based on number of processors, but if so I have only 2 processors and max. percentage activity should be 200%.

Any explain?

bontade
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Maybe you did not calibrate jVisualVM right?

Did you have any load while performing calibration? Then your numbers will likely be off.

Has QUIT--Anony-Mousse
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  • I think I calibrated jVisualVm correctly. During calibration process there wasn't running any Java application. – bontade May 13 '12 at 20:37
  • I've just calibrated jVisualVM again and trouble is still the same. If I tests WebSphere container with its own JVM everything is OK. – bontade May 20 '12 at 19:38