Intel® VTune™ Profiler User Guide

User Guide

Contents

runsa/runss
 Custom Command Line Analysis

Use the
collect-with
 action to configure and run a custom analysis using any of the following data collectors:

runsa

The hardware event-based sampling collector of the
VTune
Profiler
 profiles your application using the counter overflow feature of the Performance Monitoring Unit (PMU).
Syntax:
vtune
 -collect-with runsa [-knob <
knobName=knobValue
>] [--] <
target
>
For the most current information on available knobs (configuration options) for the hardware event-based sampling, enter:
vtune
 -help collect-with runsa
To display a list of events available on the target PMU, enter
:
vtune
 -collect-with runsa -knob event-config=? <
target
>
The command returns names and short descriptions of available events. For more information on the events, use Intel Processor Events Reference
Example 1:
This example runs a custom hardware event-based sampling collection for the
sample
 application with the specified events: 
vtune -collect-with runsa -knob event-config=CPU_CLK_UNHALTED.CORE,CPU_CLK_UNHALTED.REF,INST_RETIRED.ANY -- /home/test/sample
Example 2:
This example configures and runs a custom event-based sampling data collection with the stack size limited to 8192 bytes and defines a custom Sample After value for the CPU_CLK_UNHALTED.REF_TSC event using the
sa
 option: 
vtune -collect-with runsa -knob enable-stack-collection=true -knob stack-size=8192 -knob -knob event-config=CPU_CLK_UNHALTED.REF_TSC:sa=1800000,CPU_CLK_UNHALTED

runss

The user-mode sampling and tracing collector profiles an application execution and takes snapshots of how that application utilizes the processors in the system. The collector interrupts a process, collects the value of all active instruction addresses and captures a calling sequence for each of these samples.
Syntax:
vtune
-collect-with runss [-knob <
knobName=knobValue
>] [--] <
target
>
For the most current information on available knobs (configuration options) for the user-mode sampling and tracing, enter:
vtune
 -help collect-with runss
Example:
This example runs user-mode sampling and tracing collection for the
sample
 application with enabled loop analysis. 
vtune -collect-with runss -knob analyze-loops=true -- /home/test/sample

What's Next

When the data collection is complete, do one of the following to view the result:

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.