all with the --event-defaultsoption. The default value is all.) Every processor set (pset) is measured.

The samples can be attributed to processes, or to processes and modules, or not attributed. For example:

 

• --scope system,attr-mod

 

Measure for system activity, and attribute samples to

 

processes and modules within those processes whenever

 

possible. Samples will be attributed to functions within

 

those modules, and assembly and source listings in the

 

Function Details sections are available.

 

If you use the --scope system option, --scope

 

system,attr-mod is the default.

 

The --scope system,attr-mod option can also

 

be specified as -w.

 

• --scope system,attr-proc

 

Measure for system activity, and attribute samples to

 

processes (but not to modules within those processes)

 

whenever possible. No Function Details sections are

 

available, because attribution of samples is not done

 

on specific modules.

 

• --scope system,attr-none

 

Measure for system activity, but do no attribution to

 

individual processes running on the system. The only

 

sample attribution possible is to kernel modules.

 

Therefore, this qualifier makes sense only if the privilege

 

level is kernel or all.

 

When the scope is system, the command-line arguments

 

program and program_args should not be provided.

pset

The subject of measurement is user and kernel activity on

pset_id[:pset_id:...]

all CPUs belonging to the specified processor sets (psets).

 

(You can change the privilege level using the

 

--event-defaults option). For example, --scope

 

pset 0:1 measures all CPUs belonging to psets 0 and 1.

 

You can use the psrset -icommand to find the processor

 

assignment for all processor sets in the system.

For details on how to use --scope system, see “Using --scope system for System-Wide Measurements.”

Using --scope system for System-Wide Measurements

When the scope is system, you can specify whether you want the samples to be attributed to the processes they belong to, or to the processes and the modules of those processes, or not attributed. Using --scope system is a good first measurement method, allowing you to drill down and measure individual applications.

With --scope system, the reports for processes and modules look similar to per-process HP Caliper collection runs. A report is produced for each process or module that HP Caliper recognizes as a process or module. In addition, a report for the system as a whole is produced, which contains samples that HP Caliper could not attribute to any individual process.

70 HP Caliper Options