Launch Trace Capturing

Intel® System Debugger supports the following methods for collecting execution trace:

Last Branch Record (LBR) - a register-backed hardware feature with limited jump history.

Intel® Processor Trace (Intel® PT) - a feature to that allows you to trace thousands of instructions and provides options for configuring the trace.

To record trace with Intel® System Debugger:

Halt the target and select the desired debug context in the Debug view.

Each thread uses specific mechanisms for tracing.

Open the Instruction Trace view and click
Configure Instruction Trace
.

In the opened dialog box, select the desired method from the Trace Type
drop-down list.

You can filter out kernel or user mode instructions or choose to trace all (default) using radio buttons.

If you have selected the Intel® PT feature, you can further customize trace parameters. Check Show Advanced Parameters
box to expand the dialog.

To specify the search address range, click Add
on the right.

In the new dialog box, select the method of defining the address range:

Choose to trace instructions belonging to a specific module only. The information on modules currently loaded is displayed in the dialog.

Specify the address range manually by entering the values in hexadecimal format.

Click OK
to save changes.

Click OK
to close the configuration dialog and start trace capturing by clicking
Start Instruction Trace
.

Resume the target.

In the Instruction Trace view, click
Stop Instruction Trace
to view the collected history of instruction calls.

In This Topic

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

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