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The method sampling in JRockit is based on CPU sampling. This requires that you put load on the system to get any samples. The Top Hot Methods lists (see Figure 5-2) all methods sampled during the recording and sorts them with the most sampled method s first. These are the methods where most of JRockit's time is spent.
If your recording has native sampling enabled during the recording, you can see methods prefixed by jvm, which are native methods in the JVM.
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