Performance Tuning Guide

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Find Data Transformation Bottlenecks through the Command Line Interface

Use the Data Processor command line interface to generate an output file for a Script, XMap, or Library object, and then analyze the contents of the file to identify bottlenecks that decrease the performance of the object.

For more information about using the command line interface, see the

Data Transformation Engine Developer Guide

Open the command line interface on the machine where you run the object:

On a Windows machine, open a command window.

On a Linux or UNIX machine, open a command line.

Run the following command:

CM_console <object name> -f<input file name> -o<output file name>

Where:

<input file name> is the path and file name of the input file on the local file system.

<output file name> is the output file name. By default, the CM_console command directs output to the screen.

For example:

CM_console MyXMap -fInputFile.txt -oResults.xml

Open another terminal on the same machine and run a command that shows active processes. For example, on a Linux machine, run the

top

command. Copy the CM_console Process ID (PID).

From the

<Informatica installation directory>/tools/debugtools/pmstack

folder run the

Pmstack

command using the following syntax:

./pmstack -p <CM_console Process PID>

Repeat the process a few more times at short intervals. For example, run the process three more times at one minute intervals.

Open the output files that the command created and search each file for repetitions of the following string:

RepeatingGroupMapping::map

The number of repetitions of this string indicates the instance of the repeating group that creates a bottleneck. For example, if your run the command four times, and the output file contains three instances of

RepeatingGroupMapping::map

in the same location each time you run the command, the third repeating group is the bottleneck.

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Performance Tuning Guide

Performance Tuning Guide

Find Data Transformation Bottlenecks through the Command Line Interface

Find Data Transformation Bottlenecks through the Command Line Interface