3 These scripts trace the JVM, and require the Java hotspot provider which
4 was shipped with Java starting with version 1.6.0.
6 Some of these scripts measure method and object events, and require
7 the Java process to be run using the "+ExtendedDTraceProbes" flag.
10 java -XX:+ExtendedDTraceProbes classfile
12 The ExtendedDTraceProbes flag is not on by default to avoid the additional
13 overhead for maintaining these additional probes. When this flag is
14 enabled, the JVM may execute slightly slower than before; when the probes
15 are also enabled (especially method probes), the JVM may execute