[ofa-general] For clock- and HWC-profiling, the data collection process makes various calls into the JVM, and handles profiling events in signal handlers.

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It is important for programmers to be aware of these land mines before
they step into the dangerous parallel programming zone.

Data from the native synchronization tracing is not shown in the Java
representation.

The SHADE library does all the work of emulating the application, once
it has gathered a trace of instructions, it hands this trace over to the
'analyzer'.

In the machine representation, multiple HotSpot compilations of a given
method will be shown as completely independent functions, although the
functions will all have the same name.

This article is not intended to describe all of the functionality of
DTrace and the Sun Studio tools. The Analyzer has a radio button in the
Data Presentation Dialog for turning view mode to user, expert, or
machine. Dynamically compiled methods are loaded into the data space of
the application, and may be unloaded later.

It is important for programmers to be aware of these land mines before
they step into the dangerous parallel programming zone.

The provider name typically corresponds to the name of the DTrace kernel
module that performs the instrumentation to enable the probe.