HP Caliper User's Guide

cgprof Report Description

Available only on HP-UX.

With the cgprof measurement, produced by the cgprof measurement configuration

file, HP Caliper measures and reports both flat and call graph profiles (much like

standard gprof).

The HP Caliper gprof-like report includes these results:

• Total execution times for each function in the program

• Call counts for each function in the program

• Cycle information, member functions, time and call counts

• Most likely hot call paths in the program

Example Command Line for Text Report

$ caliper cgprof -o reports/cgprof.txt ./wordplay thequickbrownfox

Example Command Line for CSV Report

$ caliper cgprof --csv csvout ./wordplay thequickbrownfox

HP Caliper Call Graph Profile Results Accuracy

The HP Caliper call graph profile report directly measures call graph data. The number

of calls are derived by counting, not sampling. They are completely accurate and will

not vary from run to run if your program is deterministic.

The HP Caliper call graph profile report's sampling of IP data is statistical, so you

should expect a small variation (less than +/- 5%) in the timing data that HP Caliper

collects for different runs of your application.

The times cgprof reports are affected by the instrumentation done to collect the data.

The times are inaccurate in absolute terms but valid in relative terms.

HP Caliper accounts for 100 percent of time under main for all applications with 0

(zero) unattributed samples.

An entry called *ROOT* reflects 100 percent of the time for your executable, which

represents the time from:

• All the functions with no parents

• Out-of-context modules

• Stub code

Call Graph Profile Metrics

Table B-3 “Information in cgprof Measurement Report Fields (Flat Profile)” shows the