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Executing RPT and RFT tests simultaneously on the same machine

Technote (FAQ)


Can you execute tests on IBM Rational Performance Tester (RPT) and IBM Rational Functional Tester (RFT) simultaneously on a single machine?


Since the combination of RPT 7.3 and Rational Robot 7.0.1 causes 100% CPU spikes when running on the same playback machine (which is why it is not supported), you need to know if simultaneous testing with RPT and RFT on a single machine would cause similar issues.


Yes, RFT and RPT scripts can be executed simultaneously on a system successfully.

The co-existence of RFT and RPT has been tested in following environment.

  • Windows 7 OS machine with 8Gb RAM and Processor speed 2.19Ghz .
  • RPT version 8.5
  • RFT version 8.3
After running few tests to monitor the CPU utilization while RPT tests to be ongoing ( 12 user schedule), it was observed that the maximum usage of CPU was 41% (that too in only one instance) .

Note: As a best practice, IBM Rational still recommends RFT and RPT to be installed in different package group even this combination works fine.

Document information

More support for: Rational Performance Tester
Test Execution

Software version: 8.1,,,, 8.1.1,,, 8.2,,,,,,, 8.2.1,,,,,, 8.3,,

Operating system(s): Windows

Reference #: 1631357

Modified date: 29 March 2013

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