Filter generation for load testing managed environments

• US 9,465,718 B2
• Filed: 10/30/2008
• Issued: 10/11/2016
• Est. Priority Date: 10/30/2008
• Status: Expired due to Fees

• Current Assignee: Micro Focus LLC (Open Text Corporation)
• Original Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Inventors: Amichai, Nitsan
• Primary Examiner(s): ALHIJA, SAIF A
• Application Number:
  US12/261,761
• Publication Number:
  US 20100115496A1
• Time in Patent Office: 2,903 Days
• Field of Search: 703/21
• US Class Current: 1/1
• CPC Class Codes: G06F 11/3612 by runtime analysis performance monitoring G06F11/3466
• CPC Class Codes: G06F 11/3688 for test execution, e.g. scheduling of test suites

Abstract

Automatic filter generation is used in a script for load testing a client application in a client/server managed environment. Filters are generated by recording managed libraries used in the client application and recording a flow of executable instructions of the client application. The recorded data is analyzed to identify classes that generate client/server communication. The filters are created with the identified classes that generate client/server communication.

Claims

1. A process for load testing a client/server managed environment having a server system and a client application, the process comprising:

recording, into a computer memory, managed libraries used in the client application and a flow of executed instructions of the client application as a recorded data;

analyzing, with a processor, a simulation of the client application built from the recorded data to identify classes in the client application that generate client/server communication and method calls;

creating, with the processor, a filter to define recording of an application program interface of the simulation of the client application, the filter including the identified classes that generate client/server communication and methods that reference a class of a constructor part of the application program interface; and

scripting a load test including incorporating the filter into a script, with a processor, to generate a load on the server system in the client/server managed environment.

2. The process of claim 1 wherein the managed libraries include all libraries that are loaded dynamically.

3. The process of claim 1 wherein the analyzing includes statically analyzing the executable instructions of the client application.

4. The process of claim 1 wherein the analyzing builds a representation of the executable instructions.

5. The process of claim 4 wherein the representation of the executable instructions includes a graph having nodes and arcs.

6. The process of claim 5 wherein the nodes represent a class within the executable instructions and the arcs represent method calls within the executable instructions.

7. The process of claim 6 wherein the nodes include terminator nodes which represent the classes that generate client/server communication.

8. The process of claim 1 wherein creating the filter includes identifying and including classes related to the client/server communication.

9. A computer-readable storage medium storing computer-executable instructions for controlling a computer system to load test a client/server environment including a server system and a client application, the computer-executable instructions arranged in a plurality of modules including:

a recorder module including instructions configured to record managed libraries and executed instructions of the client application into a recorded data;

an analyzer module including instructions configured to build a simulation of the client application from the recorded data to identify known classes in the client application of client/server communication and method calls in the executable instructions of the client application;

a generator module including instructions configured to generate a filter to define recording of an application program interface of the simulation of the client application, the filter including the identified classes of client/server communication and methods that reference a class of a constructor part of the application program interface; and

a simulator module to script a load test wherein the filter is incorporated into a script and apply a load on the server system in the client/server managed environment.

10. The computer-readable storage medium of claim 9 wherein the recorder module records managed libraries and executable instructions while the client application is executing.

11. The computer-readable storage medium of claim 9 wherein the client/server environment is in a managed environment.

12. The computer-readable storage medium of claim 11 wherein the client application is a smart client.

13. The computer-readable storage medium of claim 11 wherein client/server communication is at least one of encrypted or binary.

14. The computer-readable storage medium of claim 13 wherein the client server communication is a remoting application program interface.

15. The computer-readable storage medium of claim 11 wherein the instructions configured to generate a filter for an application layer include instructions to identify and include classes that generate client/server communication.

16. The computer-readable storage medium of claim 15 wherein the instructions configured to generate a filter for an application layer include instructions to identify and include classes related to the classes that generate client/server communication to complete the filter for the application layers.

17. A load testing system configured to test a client/server model in a managed environment having a client application and a server system, comprising:

a testing processor coupled to a memory;

a user generator operably coupled to the testing processor and the memory and configured to record managed libraries used in the client application and a flow of executed instructions of the client application as recorded data, analyze a simulation of the client application built from the recorded data to identify classes in the client application that generate client/server communication in the client/server model and method calls, creating a filter to define recording of an application program interface of the simulation of the client application, the filter including the identified classes that generate client/server communication and methods that reference a class of a constructor part of the application program interface, and scripting a load test including incorporating the filter into a script; and

a controller configured to apply the script to generate a load test the server system in the client/server model in the managed environment.

18. The load testing system of claim 17 wherein the controller is configured to operate a plurality of virtual users to run the test.

19. The load testing system of claim 18 and including an analyzer to receive information regarding the client/server model under test.

20. The load testing system of claim 17 wherein the controller includes at least one load generating machine to provide a test load.