•
To make duration measurements, set up the trace command to store only the entry
and exit points of the module of interest. For example:
trace after <symbol_entry> or <symbol_exit> only
symbol_entry
or symbol_exit counting time
or
trace after <module_name> start or module_name end only
module_name
start or module_name end counting time
Since the trigger state is always stored, you should trigger on the entry or exit
points.
<symbol_entry> and <symbol_exit> are symbols from the user program.
<module_name> is the name of a C function or Pascal procedure (and is listed
as a procedure symbol in the global symbol display).
Step 2. Initialize the performance measurement
After you set up the trace command, you must tell the SPMT the address ranges on
which you wish to make activity measurements or the time ranges to be used in the
duration measurement. This is done by initializing the performance measurement,
which can be accomplished in various ways.
•
To use the default configuration, enter the following command with no options:
performance_measurement_initialize
This specifies an activity measurement. If a valid symbolic database has been
loaded, the addresses of all global procedures and static symbols will be used.
Otherwise, a default set of ranges that cover the entire processor address range
will be used.
Chapter 7: Making Software Performance Measurements
To use the Software Performance Measurement Tool
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Страница 141: ...4 Using the Emulator How to control the processor and view system resources 111 ...
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