Enterprise Library Test Guide - Willy .Net

Testing for Performance and Scalability 183
15. The Specify computers to monitor with counter sets during load test run dialog
box appears. Click Add Computer to select the computers to monitor during the
load tests.
16. Click Counter sets. Select the counters that interest you. For information about the
counters used in the Enterprise Library tests, see Detecting Performance Issues
and Measuring Performance. Click Next.
17. The Review and edit run settings for a load test dialog box appears. Set the
Timing values. For the Enterprise Library tests, the sampling rate was 120 samples
for any particular time frame. Stress tests ran from 12 hours to 72 hours.
Performance tests ran for 5 minutes to 7 minutes. Warm-up times varied from 30
seconds for 7 minute performance tests to 5 minutes for tests longer than 2 hours.
18. Click Finish.
To run a load test, open the load test in the Load Test Editor, and then click the green
Run button.
Testing the Application Blocks
This section provides the specifics of the performance tests for each of the application
blocks. It includes the following information:
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The scenarios used to test the application block
A description of the test harness
The test code for the application block
The test code for the .NET Framework baseline
The workload
A template to compare the application block metrics with the baseline metrics
The application blocks were tested both with the instrumentation enabled and with
it disabled. Use the Enterprise Library Configuration Console to enable or disable the
instrumentation. For more information, see the Enterprise Library documentation.
Note: Only Testing the Caching Application Block contains information about how the application
block was configured. This is the only application block where some of the configuration parameters
could affect the performance and stress tests.
Testing the Caching Application Block
To run the performance tests, the Caching Application Block was configured as
follows:
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The expiration poll frequency was 60 seconds.
The maximum number of elements in the cache before scavenging would begin
was 900.